11. The product of two numbers is 9375 and the quotient, when the larger one is divided by the smaller, is 15. The sum of the numbers is:
12. The product of two numbers is 120 and the sum of their squares is 289. The sum of the number is:
13. A number consists of 3 digits whose sum is 10. The middle digit is equal to the sum of the other two and the number will be increased by 99 if its digits are reversed. The number is:
14. The sum of two number is 25 and their difference is 13. Find their product.
15. What is the sum of two consecutive even numbers, the difference of whose squares is 84?
16. The sum of twice a number and three times of 42 is 238. What is the sum of thrice the number and two times of 42 ?
17. By how much is $$\frac{3}{4}$$th of 568 lesser than $$\frac{7}{8}$$th of 1008 ?
18. Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is :
19. What is the greater of the two numbers whose product is 1092 and the sum of the two numbers exceeds their difference by 42 ?
20. The product of three consecutive even numbers when divided by 8 is 720. The product of their square roots is :
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