Question

Ramu had to select a list of numbers between 1 and 1000 (including both), which are divisible by both 2 and 7. How many such numbers are there?

• A. 142
• B. 71
• C. 97
• D. 642

Answer 1

Answer:

B. 71

an = a + ( n - 1) × d a = 14 , last term = 994 d = 2nd term - 1st term = 28 - 14 = 14 994 = 14 + ( n - 1) × 14 980 = 14n - 14 994 = 14n n = 71