2017 Nabteb Gce Mathematics Answer Available

2018 JAMB SUBSCRIPTION


MATHS OBJ:
1-10: BDCCDCCBBB
11-20: BACDCCCACD
21-30: BADCDCBDCC
31-40: BDCADBCBCB
41-50: ACCDADACBD

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Theory

1a)
123.24base8 – ()base10
= 1*8^2 + 2*8^1 + 3*8^0 + 2*8^-1 + 4*8^-2
= 64 + 16 + 3 + 2/8 + 4/64
= 83 + 1/4 + 1/16
= 83 + 4+1/16
= 83 + 5/16
= 83^5/16base10

1b)
8^1/3 * 5^2/3 * 10^-2/3
2^3/3 * 5^2/3 * (2*5)^2/3
2^1 * 5^2/3 * 2^-2/3 * 5^-2/3
2^1 * 2^-2/3 * 5^2/3 * 5^-2/3
2^1-2/3 * 5^2/3-2/3
2^3-2/3 * 5^0
2^1/3 * 1
= 2^1/3

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