Consider the following statements (A) 141 is a prime number. Choose the correct answer from the options given below: |
(B) and (D) only (A), (B) and (D) only (B), (C) and (D) only (B) only |
(B) and (D) only |
The correct answer is Option (1) → (B) and (D) only Evaluation of Each Statement: (A) 141 is a prime number. False. 141 is composite because it is divisible by 3 (sum of digits: 1 + 4 + 1 = 6, divisible by 3) and 47 (141 = 3 × 47). (B) 2984234 is divisible by 11. True. Using the divisibility rule for 11 (alternating sum or difference of sums in odd/even positions from left): Digits: 2, 9, 8, 4, 2, 3, 4 Odd positions: 2 + 8 + 2 + 4 = 16 Even positions: 9 + 4 + 3 = 16 Difference: 16 - 16 = 0 (divisible by 11). Direct check: 2984234 ÷ 11 = 271294 (exact integer). (C) 39552 is divisible by 18. False. For divisibility by 18, the number must be divisible by both 2 and 9.
(D) The sum of the face values of 3 and 5 in 36251 is 8. True. Face value of a digit is the digit itself (independent of place value): 3 + 5 = 8. Thus, only statements (B) and (D) are correct. |