11. 418 people are watching a movie in a half. If the hall has 22 rows. How many people can sit in 1 row ?
(A) 21
(B) 24
(C) 26
(D) 19
Answer:
(D) 19
Explanation:
418/22 = 21
12. The space occupied by any object is called
(A) volume
(B) area
(C) perimeter
(D) density
Answer:
(A) volume
Explanation:
Volume is the scientific and mathematical term used to describe the three-dimensional space that is occupied by a solid, liquid, or gas object.
13. Find the greatest number which divides 54 and 72.
(A) 16
(B) 18
(C) 24
(D) 27
Answer:
(B) 18
Explanation:
The question asks for the Highest Common Factor (HCF). The factors of 54 are 1, 2, 3, 6, 9, 18, 27, 54. The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72. The largest factor present in both lists is 18.
14. The number which is neither prime nor composite is
(A) 2
(B) 3
(C) 1
(D) 6
Answer:
(C) 1
Explanation:
A prime number has exactly two distinct divisors (1 and itself), and a composite number has more than two. The number 1 only has one divisor (itself), making it a unique entity that is neither prime nor composite.
15. Simplify 50 ÷ 5 + 6 x 11 – 21
(A) 39
(B) 45
(C) 52
(D) 55
Answer:
(D) 55
Explanation:
using BODMAS rule 50 ÷ 5 + 6 x 11 – 21 = 10 + 6 x 11 – 21 = 10 + 66 – 21 = 55
