Arithmetic Multiple Choice Questions (MCQs) Test with Answers.
(A) 2440
(B) 2550
(C) 2650
(D) 2700
Answer: (B) 2550
Explanation: This is an arithmetic sequence with common difference of 2. The first element is 2, the last element is 100, and total elements (from 2 to 100) are 50. So, a1 = 2, an = 100, d = 2 and n = 50. So, by using the formula for the sum of n elements of an arithmetic sequence, we have
(A) 135.5ml
(B) 187.5ml
(C) 175.5ml
(D) 220.5 ml
Answer: (B) 187.5ml
Solution:
8ml base in solution = 100ml
1ml base in solution = 8/ 100 = 12.5ml
15ml base in solution = 12.5 × 15 = 187.5ml.
so answer is = (B) 187.5ml
(A) 281 boys, 539 girls
(B) 451 boys, 369 girls
(C) 538 boys, 280 girls
(D) None of these
Answer: (B) 451 boys, 369 girls
Explanation:
Total number of students = 820
Number of boys = 820 x 55/100 = 451 boys
Number of girls = 820 – 451 = 369
So, Answer is = 451 boys and 369 girls.
(A) 8
(B) 16
(C) 20
(D) 40
Answer: (A) 8
Explanation:
50% of 80 = 80 x 50/100 = 40
20% of 40 = 40 x 20/100 = 8
so, answer is 8.
(A) 18.69
(B) 195938
(C) 171396
(D) 24.89
Answer: (C) 171396
Explanation:
414 x 414 = 171396