Numbers with Explanation

Q22. Simplify: = ?

A. 5 B. 8
C. 4 D. 6

Q23. Find the unit digit in product (684 x 759 x 413 x 676)?

A. 9 B. 8
C. 10 D. 13

Q24. What is the unit digit in the product (3547)153 x (251)72?

A. 7 B. 8
C. 10 D. 9

Q25. Find the total number of prime factors in the product {(4)11 x 75 x (11)2}.

A. 30 B. 25
C. 28 D. 29

Q26. What is the unit digit in {(264)102 + (264)103}?

A. 8 B. 3
C. 0 D. 4

Q27. Find the remainder when 231 is divided by 5

A. 3 B. 4
C. 5 D. 2

Q28. The difference between the place value and the face value of 6 in numeral 856973 is

A. 6973 B. 973
C. 5994 D. None of these