RRB Group-D Model Paper 13 with answers for online practice

Question : 72 of 100

Marks: +1, -0

What will come in place of the question mark ‘?’ in the following question?

({2/7} ÷{ 5/7}) +({1/8}÷{5/4})−1/4=?

Solution:

({2/7} ÷{ 5/7}) +({1/8}÷{5/4})−1/4=?

⇒

({2/7}×{7/5})+({1/8}×{4/5})−1/4=?

⇒

2/5+1/10−1/4=?

⇒ ? = 1/2 – 1/4
∴ ? = 1/4

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