Look at this series: 70, 71, 76, __, 81, 86, 70, 91, ... What number should fill the blank?
A). 68
B). 69
C). 70
D). 71
70
In this series, 5 is added to the previous number; the number 70 is inserted as every third number.
3. Which one of the following numbers is exactly divisible by 11?
5. How many positive factors of 132 are there?
6. The L.C.M of three different numbers is 120. Which of the following cannot be their H.C.F.?
7. Find the greatest common factor of 280 and 144.
8. The sum of a non - zero number and twenty times its reciprocal is 9. What is the number?
9. What is the minimum number to be subtracted from 6321, which makes it completely divisible by 14?