Number System MCQs

If A = $$0.3\overline {12} ,$$ B = $$0.4\overline {15} $$ and C = $$0.30\overline 9 ,$$ then what is the value of A + B + C?

How many numbers are there from 500 to 650 (including both) which are neither divisible by 3 nor 7?

350 + 926 + 2718 + 928 + 929 is divisible by which of the following integers?

Convert decimal 101 to binary:

Each member of a club contributes as much rupees and as much paise as the number of members of the club. If the total contribution is Rs. 2525, then the number of members of the club is:

If X and Y are the two digits of the number 347XY such that the number is completely divisible by 80, then what is the value of X + Y?

When 12, 16, 18, 20 and 25 divide the least number x, the remainder in each case is 4 but x is divisible by 7. What is the digit at the thousand's place in x?

The value of (1018)2 - 1019 × 1017 + 1015 × 1012 - 1016 × 1011 is:

If the sum of digits of a two digit number is 10 and if the digits of two digits number is reversed, then the number is decreased by 36. Which of the following is correct regarding the number? I. The difference of the digits is 4. II. The value of number can be 84. III. Number is always a composite number.