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rohit

Questions (54)

find the number of moles in 48 gm or carbon
1. 1 answer
2. 429 views
You must have seen actors in Hindi films jumping over huge gaps on horse backs and motor cycles. In this problem consider a
1. 1 answer
2. 1,509 views
For what value of 'k' the points ( -k + 1, 2k), (k, 2 - 2k) and ( - 4 - k, 6 - 2k) arecollinear.
1. 1 answer
2. 793 views
a circular pizza is cut along four diameters into eight identical sectors. If the total perimeter if each sector is 10 inches
1. 1 answer
2. 928 views
4N force applied on a body mass 20kg then calculate work done in 3sec?
1. 1 answer
2. 992 views
write numeral for thirty seven crore thirteen thousand nine hundred forty eight
1. 1 answer
2. 503 views
Suggest anexperiment to compare the conductivity of electricity by iron, copper, aluminium and zinc. Perform the experiment and
1. 2 answers
2. 1,294 views
Divide 54 into two parts such that one part is 2/7 find the other
1. 1 answer
2. 1,135 views
what increasing order of dipole moment among nitrobenzene methylbenzene phenol and toluene
1. 0 answers
2. 632 views
When the ray of light travels from air to glass slab and strikes the surface of separation at 90 degree , then it ..........
1. 2 answers
2. 730 views
When the ray of light travels from air to glass slab and strikes the surface of separation at 90 degree , then it ..........
1. 3 answers
2. 715 views
in a Quadrilateral ABCD, AB=AD and CB=CD.Prove that- (1) AC bisects angle BAD (2) AC is perpendicular bisector of BD
1. 2 answers
2. 819 views
The sum of interior angels and the sum of exterior angles of polygon are in the ratio 9:2.find the sides of regular polygon.
1. 1 answer
2. 695 views
Score of Janet in Maths is 25 more than two-third of her score in English. If she scores x marks in English, what is her score
1. 3 answers
2. 527 views
there are 20 apples and 15 oranges in a bin.if some apples are removed from the bin so that the probability of randomly drawing
1. 1 answer
2. 971 views
draw a square on the graph paper whose each side of the length 5 centimetre and then make partition of the square into 25 small
1. 1 answer
2. 551 views
a+boundary+wall+of+your+house+is+divided+in+to+10+vertical+strips+of+equal+width+you+painted+4+strips+of+wall+with+pink+3+with+y
1. 1 answer
2. 522 views
A reference solution is to be prepared with 5 PPM parabenzopyrene (molecular weight = 252). The quantity of parabenzopyrene
1. 2 answers
2. 1,024 views
Determine 208/207+208/207×206/205+208/207×206/205×204/203+…
1. 1 answer
2. 473 views
Find the smallest number N such that:The number of divisors of N is A. The number of divisors of A is B. The number of divisors
1. 1 answer
2. 400 views
How many functions f from the reals to the reals are there, such that f(f(x))=x^2−2?Details and assumptions f need not be a
1. 0 answers
2. 434 views
How many positive integers n are there such that 10^n≤n^10?
1. 1 answer
2. 372 views
What is the smallest positive integer with exactly 12 (positive) divisors?
1. 1 answer
2. 847 views
Earthquakes are motions of the earth's crust. Essentially, they are big sound waves that travel through the earth. There are two
1. 2 answers
2. 698 views
As θ ranges over all real values, what is the maximum value of(14sinθ+5cosθ)^2
1. 1 answer
2. 410 views
On children's day, a teacher brought 63 erasers and 147 sweets to distribute out completely to her class. Each student receives
1. 2 answers
2. 535 views
As x,y,z ranges over all possible real numbers, what is the minimum value of 3x^2+12y^2+27z^2−4xy−12yz−6xz−8y−24z+100?
1. 2 answers
2. 506 views
Find the number of positive integers <1000 that can be expressed as 2^k−2^m, where k and m are non-negative integers.
1. 0 answers
2. 426 views
What is the sum of all integer values of n such that 3n+15/(n−1)(n−5) is also an integer
1. 1 answer
2. 443 views
Suppose z=a+bi, where a and b are integers and i is the imaginary unit. We are given that |1+iz|=|1−iz| and |z−(13+15i)|<17.
1. 1 answer
2. 505 views
You and your friend, both of mass 70 kg, are playing catch with a frisbee on frictionless ice. Initially, you are both at rest.
1. 2 answers
2. 649 views
The probability that Katarina will correctly solve a given Brilliant math problem is 1/8. The probability that Layla will solve
1. 3 answers
2. 603 views
Three coins are randomly placed into different positions on a 4×10 grid. The probability that no two coins are in the same row
1. 0 answers
2. 510 views
x,y and z are positive reals. What is the maximum value of ((x+y+z)^3−x^3−y^3−z^3)^2/(x^2+y^2+z^2)^3−x^6−y^6−z^6
1. 2 answers
2. 390 views
Let f(x)=x^2−1. How many distinct real roots are there to f(f(f(x)))=0?
1. 1 answer
2. 483 views
What is the largest possible integer that can be chosen as one of five distinct positive integers whose average is 10?Details
1. 1 answer
2. 555 views
A current I=1A flows along a thin-walled cylinder of radius R=4cm. What pressure in Pascals do the walls of the cylinder
1. 0 answers
2. 442 views
Two parallel wires carry 1-A currents in unknown directions. The distance between the wires is 10-cm. What is the magnitude of
1. 0 answers
2. 520 views
ABC is an acute triangle with \angle BCA = 35 ^\circ. Denote the circumcenter of ABC as O and the orthocenter of ABC as H. If
1. 0 answers
2. 713 views
What is the smallest positive common difference of a 6-term arithmetic progression consisting entirely of (positive) prime
1. 0 answers
2. 434 views
The sun goes around the center of our galaxy once every 250 million years. The sun is also 2.55×10^20 m from the center of our
1. 0 answers
2. 466 views
A moving dot P departs from O at an initial speed of 6 m/s in the east direction and accelerates at 2 m/s^2 in the east
1. 1 answer
2. 473 views
What is the slope of the line tangent to the quadratic f(x)=4x^2−3x+6 at x=7?
1. 1 answer
2. 394 views
How many integers appear in both of the following arithmetic progressions:A1:2,9,16,……,2+(1000−1)×7
1. 0 answers
2. 406 views
Find the sum of all 3-digit positive numbers N that satisfy the condition that the digit sum of N is 3 times the digit sum of
1. 5 answers
2. 1,371 views
underoot 2x square +3x + underoot 2 by alpha into beta method.
1. 0 answers
2. 304 views
if x3+ax2-bx+10 is divisible by x2-3x+2 .find the value of a and b
1. 2 answers
2. 1,724 views
determine the concentrated of mohrs salt solution with the help of supplied n/10 kmno4 solution preparred?
1. 0 answers
2. 433 views
what computers can do?what computers cannot do?what are the advantages and disadvantages of computers?what are the roles of
1. 3 answers
2. 1,495 views
1- What volume of hydrogen gas at 273 K and 1 atm pressure will consumed in obtaining 2.16 gm of elemental born(atomic
1. 1 answer
2. 679 views
The parallax of the red giant Betelguese is just barely measurable and has a value of about 0.005 arc seconds. What is its
1. 0 answers
2. 914 views
Arcturus is about half as hot as the Sun but is about 100 times more luminous. What is its radius campared to the sun.If
1. 0 answers
2. 699 views
are alps bigger or mountains?or wat's the difference between them?Alps are mountains in one specific geographic region. It is a
1. 1 answer
2. 1,301 views
whr do cattles and sheep live like in high altitudes or middle or low altitudes?Cattle need food, water, and a temperature range
1. 0 answers
2. 513 views

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