In the following question, select the related letter/letters from the given alternatives.
DFI : IKN : : NPS : ?
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Find the average of first 20 multiples of 9.
The following equation is incorrect. Which two signs should be interchanged to correct the equation?
12 + 8 - 25 ÷ 10 x 18 = 14
In the following question, select the missing number from the given series.
29, 27, 24, ?, 15, 9
21 + 16 x 35 - 70 ÷ 20 = 9
18 + 26 - 25 x 10 ÷ 5 = 42
Find the odd word/letters/number pair from the given alternatives.
(A) Square (B) Sphere (C) Rectangle (D) Circle
Brass gets discoloured in air because of the presence of which of the following gases in air ?