Numbers with Explanation

Q15. (5 + 14 + 23 + 32 + ... + 113) = ?

A. 767 B. 654
C. 889 D. 952

Q16. What must least number be added from 2010 to obtain a number which is wholly divisible by 19?

A. 6 B. 5
C. 4 D. 7

Q17. How many natural numbers between 11 and 99 are divisible by 7?

A. 15 B. 12
C. 14 D. 13

Q18. On dividing an individual number by 342, we get 47 as remainder. If the same number is divided by 18, what will be the remainder?

A. 19 B. 15
C. 13 D. 11

Q19. Find the sum (3 + 32 + 33 + 34 + ... + 39)

A. 29523 B. 88572
C. 9840 D. 3279

Q20. What is the sum of all even natural numbers less than 87?

A. 1640 B. 1806
C. 1892 D. 1980

Q21. Simplify: = ?

A. 330 B. 320
C. 325 D. 350