If there are 10 positive real number n₁ < n₂ < n₃ ... < n₁₀. How many triplets of these numbers (n₁, n₂, n₃), (n₂, n₃, n₄), .... can be generated such that in each triplet the first number is always less than the second number, and the second number is always less than the third number?

The Product of the L.C. M and H.C.F of two numbers is 24. The difference of two numbers is 2. Find the numbers.

12.5% of 550 - 11% of 221 =? – 1.56

Find the wrong number in the series: 2, 9, 28, 65, 126, 216, 344

If log_n 54=a and log_n72=b, find log_n 1728 in terms of a and b.

3/8 of 168 x 155+?-5499+235

4 , 9, 25, 49, _____

Let A denote the set of positi8ve integers each of which when divided by 2,3,4,5,6 leaves a remainder of 1,2,3,4,5 respectively. How many numbers in A are between 0 and 100?

How many numbers greater than a million can be formed using digits 0,6 ,6, 7 , 0, 0 , 6, and 7