self Maths Puzzle

1.5625 = ?

A. 1.05 B. 1.25
C. 1.45 D. 1.55

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self Other Question

What should come in place of both x in the equation x = 162 .
128 x
A. 12 B. 14
C. 144 D. 196
a = 0.1039, then the value of 4a2 - 4a + 1 + 3a is:

A. 0.1039 B. 0.2078
C. 1.1039 D. 2.1039