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Number bases - Jamb Mathematics Past Questions and Answers

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Jamb Mathematics Past Questions

Jamb Past Questions and Answers on Number bases

Question 1:


In base ten, the number 101101 (base 2) equals

A. 15
B. 4
C. 45
D. 32
E. 90


Question 2:


Add 54 \(_{eight}\) and 67\(_{eight}\) giving your answers in base eight

A. 111
B. 121
C. 123
D. 143


Question 3:


if y = 23\(_{five}\) + 101\(_{three}\) find y leaving your answer in base two

A. 1110
B. 10111
C. 11101
D. 111100


Question 4:


Calculate 243\(_{six}\) — 243\(_{five}\) expressing your answer in base 10

A. Zero
B. 1
C. 26
D. 46


Question 5:


If y = 23\(_{five}\) + 101\(_{three}\) , find y, leaving your answer in base two

A. 1110
B. 10111
C. 11101
D. 111100






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