mathematical operation Model Questions & Answers, Practice Test for ssc mts paper 1 2023

Answer: (c)

Given : A + B = 2C ..........(1)

and C + D = 2A ......... (2)

Adding (1) and (2) we get :

A + B + C + D = 2C + 2A ⇒ B + D = A + C.

Answer: (b)

Using the usual notations, we have

(a). The statement is a > b < c ⇒ a = c < b , which is false [∵ c > b]

(b). The statement is a > b < c ⇒ b < a > c, which is false. [∵ b < a]

(c). The statement is a > b < c ⇒ a < b > c , which is true

(d). The statement is a > b < c ⇒ c < b < a , which is false. [∵ b < a]

Answer: (b)

The rule is a + b = $({a + b}/2)^2$

3 + 5 = $({3 + 5}/2)^2$ etc.

∴ 11 + 3 = $({11 + 3}/2)^2$ = 49

Answer: (d)

Using the correct symbols, we have

Given expression = 24 x 12 + 18 ÷ 9 = 288 + 2 = 290.

Answer: (d)

Using the proper notations in (d), we get the statement as

2 × 5 – 6 + 2 = 6 or 10 – 6 + 2 = 6 or 6 = 6, which is true.