There can be multiple solutions to this problem.

For eg.

1 + 3 + 5 + 7 + 9+ 11 + 13 + 15 + 135 = 199

or,

3 + 5 + 7 + 9+ 11 + 13 + 15 + 17 + 119 = 199

etc.

1 , 3, 5, 7, 9, 11, 13, 15, 135

3,5,7,9,11,13,15,17,19

Arithmetic mean of two numbers whose sum is equal to 28, is equal to the geometrical mean of two perfect square numbers. Sum of these perfect square number out of given ten option will be

1) 42 2) 45 3) 48 4) 49 5) 51 6) 52 7) 53 8) 56 9) 58 10)60

Find the sum of all whole numbers whose digits are strictly increasing?

Examples of such numbers are 5, 379, and 12345789 Some non-examples are 22, 102, and 123456798