If x \times y = (x + 3)^2 (y –1) , then the value of 5 \times 4 is

RRB Junior Engineer Stage 1 Model Papers 1

Question : 15 of 100

Marks: +1, -0

x × y = (x + 3)^2 (y –1)

, then the value of

5 × 4

Solution:

x × y = (x + 3)^2 (y –1)

∴ 5×4=(5+3)^2(4-1)

=64×3=192

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