Find the missing number from the given alternatives: 28, 20, 7 84, ?, 12 45, 25, 9

Select that number triad from the given options similar to given number triads. (125, 64, 16), (81, 27, 45)

The first pair of numbers bear a certain relationship. The same relationship is required to be found in the other pair, Find that missing number : 35 : 6 : : 120 :?

How many times the digit 9 occurs in the numbers from 100 to 999?

Find the sum of all three-digit numbers divisible by 9.

The number π − 22/7 is