Study the given pattern carefully and select the number that can replace the question mark (?) in it. First row – 15, 11, 43

Study the given pattern carefully and select the number that can replace the question mark (?) in it. First row – 15, 11, 43

Second row – 13, 8, 30

Third row – 9, 7, ?

(NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 – Operations on 13 such as adding / subtracting / multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is NOT allowed)

A.            19

B.            23

C.            27

D.            28

Sol:

Pattern follows here is:

If A : B : C =

C=2A+3B-20

So the required number is 18 + 21 – 20 = 19.

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