## 36. Find the number of divisors of 1420.

## 37. The LCM of two numbers is 1890 and their HCF is 30. If one of them is 270, the other will be

## 38. Find the least number of five digits which when divided by 40, 60, and 75, leave remainders 31, 51 and 66 respectively.

## 39. There are 576 boys and 448 girls in a school that are to be divided into equal sections of either boys or girls alone. Find the total number of sections thus formed?

## 40. Which of following can never be ending of a perfect square?

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