Question

A number lies between 30 and 60.

The number is multiple of 5.

The number is divisible by a number and its square number also.

Which option is incorrect?

1. 15 is factor of that number.
2. The number has 6 factors.
3. 2^nd multiple of number is lies between 45 and 80
4. 2 is not factor of the number.

Answer 1

Correct Answer - Option 3 : 2^nd multiple of number is lies between 45 and 80

Calculation:

45 lies between 30 and 60.

45 is a multiple of 5.

45 is divisible by 3 and its square number 9.

Factors of 45 are 1, 3, 5, 9, 15 and 45 i.e. total of 6 factors.

2^nd multiple of 45 is 90.

The correct option is 3 i.e. 2nd multiple of a number is lies between 45 and 80