Verbal Reasoning - Mental Ability Questions

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

ab_d_ed_baa_ _de

In the following question, select the missing number from the given series.47, 44, 40, 37, ?, 30

How many triangles are there in the given figure?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

Beijing Olympics, London Olympics, Rio Olympics, ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

GB, ID, LG, ?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

BM, FQ, JU, ?, RC

If 5Δ1 = 40, 9Δ9 = 0 and 7Δ1 = 60, then find the value of 4Δ9 = ?

From the given alternatives, select the word which CANNOT be formed using the letters of the given word.

Travelling