symbolic operations Model Questions & Answers, Practice Test for ssc chsl tier 1

Directions:

These questions are based on the following information:

  • 'A @ B' means 'A is added to B'.
  • 'A ★ B' means 'A is multiplied by B'
  • 'M # B' means 'A is divided By B'
  • 'A $ B' means `B is subtracted from A'

In each question, some information is given. You have to find out which expression correctly represents the statement.

Question :1

Total age of 12 boys is X and the total age of 13 girls is ÷. What is the average age

Answer: (a)

Average age of all boys and girls

(A) = ${x + y}/{25}$

A1 = (x @ y) # 25

Question :2

Number of boys (B) in a class is equal to one-fourth of three times the number of girls (G) in the class.

Answer: (b)

B = $1/4$ × 3G = ${3G}/4$

⇒ B = (3 ★ G) # 4

Question :3

Marks obtained by Sujit in History (H) are 85% of his marks obtained in Science (M).

Answer: (c)

H = ${85}/{100}$ × M

⇒ H = (85 # 100) ★ M

Question :4

Salary of Mr. X (S1) is more than 40% of Mr. Y's salary (S2) by Rs 8,000

Answer: (d)

S1 = ${40}/{100}$ × S2 + 8,000

S1 = [S2 ★ (40 # 100)] @ 8,000

Question :5

Population of state M (P1) is less than half of population of state N (P2) by 1,50,000.

Answer: (b)

P1 = ${P_2}/2$ - 1,50,000

⇒ P1 = (P2 # 2) $ 150000

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