2011
Mathematics
JAMB
If 2q35 = 778 , find q
A.
2
B.
1
C.
4
D.
0
Correct Answer: 2
Explanation
2q35 = 778 2 x 52 + q x 51 + 3 x 50 = 7 x 821 + 7 x 80 2 x 25 + q x 5 + 3 x 1 = 7 x 8 + 7 x 1 50 + 5q + 3 = 56 + 7 5q = 63 - 53 q = 10/5 q = 2
2q35 = 778 2 x 52 + q x 51 + 3 x 50 = 7 x 821 + 7 x 80 2 x 25 + q x 5 + 3 x 1 = 7 x 8 + 7 x 1 50 + 5q + 3 = 56 + 7 5q = 63 - 53 q = 10/5 q = 2THIS WEEK's
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