In Roman numerals, M represents 1000, C represents 100, and D represents 500. Because C (smaller value) is placed directly before D (larger value), it indicates subtraction
thus MCD = 1400
17. HCF of two consecutive number is always :
(A) 2
(B) 3
(C) 1
(D) 0
Answer:
(C) 1
Explanation:
Any two consecutive integers (such as 8 and 9, or 20 and 21) are inherently coprime. Because one will always be even and the other odd, and they share no prime factors, their Highest Common Factor (HCF) is always 1.
18. One third of which among the following is 9:
(A) 18
(B) 27
(C) 15
(D) 12
Answer:
(B) 27
Explanation:
19. The product of 6.7 x 4.2 is.
(A) 28.14
(B) 281.4
(C) 28.014
(D) 2.814
Answer:
(A) 28.14
Explanation:
First, multiply the numbers without decimals: Since there is one decimal place in 6.7 and one decimal place in 4.2, the final product must have two total decimal places, resulting in 28.14.
20. when three or more than three points are not on the same line, they are called.
(A) collinear
(B) non-collinear
(C) polygon
(D) none
Answer:
(B) non-collinear
Explanation:
Points that lie exactly on a single straight line are called collinear. If a set of three or more points cannot be connected by a single straight line, they are geometrically termed non-collinear.
