Ask a New Question

Question

what is the unit digit in (7^95 - 3^58) ?
10 years ago

Answers

Steve
powers of 7 end in 7,9,3,1,...
so, 7^95 = 7^92 * 7^3 -- it ends in 3

do a similar thing for powers of 3.

then do the subtraction.
10 years ago

Related Questions

what is the unit digit of 7^49? I solved it and got the answer 07, but I'm not sure if it's correct... The units digit of a two-digit number is 1 less than the square of the tens digit. The number revers... If the unit’s digit of a two-digit number is 6 more than the ten’s digit and the number is 8 more th... The unit's digit for the number 7^76 is____ ? in a two digit number the unit digit is one more than twice the ten's digit if the order of the digi... If the digit in unit's place of number is 7 then the digit in the unit's place of its cube is The unit digit of a 2-digit number is greater than the tens digit by 3. If the product of the digit... my unit digit is 2, my tens digit is 6, my hundred digit is 9, my thousand digit is 4, what number a... My unit digit is the third multiple of 3 49. Assertion: The unit digit of cube of 128, 38 and 48 is 4. Reason: If a number ends with 8, th...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use