Twin prime numbers are the prime numbers whose difference is always equal to 2. The number of twin primes between 35 and 100 is:
Out of four numbers, the average of the first three is 16 and that of the last three is 14. If the last number is 17, then find the first number?
- The digits of a two-digit number add up to 9. If 27 is subtracted from the number, the digits switch places. What is the number?
A two-digit number is 4 times the sum of its digits. If 27 is added to the number, the digits interchange their places. What is the number?
When a number is divided by 17, the remainder remains 6. Find the remainder obtained when the square of the same number is divided by 17.
Find the sum of the first 10 natural numbers.
- Find the remainder when the denominator of 'k' is divided by its numerator, if 'k' is the fraction to be subtracted from (3/4) to result in (1/6).
Find the difference between minimum and maximum value of 'e' such that '3e1750' is always divisible by 3.
If '502x62y' is a seven-digit number which is divisible by 72, then find the least possible value of (x - y).
If the numerator of a fraction is increased by 200% and the denominator is increased by 400%, the resultant fraction is 9/25 . What was the original fra...
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