JAMB Mathematics questions: Number bases

25 questions with answers and explanations. Tap an option to check yourself.

All JAMB WAEC

Question 1· Number bases· JAMB
If 35 (base n) = 26 (base 10), find n.
Explanation and discussion
Question 2· Number bases· JAMB
Find the digit y if 2y4₇ = 144 (base ten).
Explanation and discussion
Question 3· Number bases· JAMB
Convert 1101 (base 2) to base 8.
Explanation and discussion
Question 4· Number bases· JAMB
Which of the following numbers is the largest?
Explanation and discussion
Question 5· Number bases· JAMB
Convert 1.11₂ to base ten.
Explanation and discussion
Question 6· Number bases· JAMB
Convert 0.101 (base 2) to base 10.
Explanation and discussion
Question 7· Number bases· JAMB
Convert 52 (base 8) to base 10.
Explanation and discussion
Question 8· Number bases· JAMB
Convert 345 (base 6) to base 10.
Explanation and discussion
Question 9· Number bases· JAMB
Evaluate 101 (base 2) + 111 (base 2), giving the answer in base 2.
Explanation and discussion
Question 10· Number bases· JAMB
Evaluate 341₆ − 125₆, giving the answer in base six.
Explanation and discussion
Question 11· Number bases· JAMB
Which of these numbers is the largest? 1011₂, 23₅, 15₈, 1111₃
Explanation and discussion
Question 12· Number bases· JAMB
Subtract 101 (base 2) from 1100 (base 2), giving the answer in base 2.
Explanation and discussion
Question 13· Number bases· JAMB
Add 234 (base 5) and 143 (base 5), giving the answer in base 5.
Explanation and discussion
Question 14· Number bases· JAMB
Convert 1010 (base 2) to base 5.
Explanation and discussion
Question 15· Number bases· JAMB
Find the digit x if 2x1 (base 3) = 22 (base 10).
Explanation and discussion
Question 16· Number bases· JAMB
Evaluate 12 (base 3) × 2 (base 3), giving the answer in base 3.
Explanation and discussion
Question 17· Number bases· JAMB
Convert 213 (base 4) to base 10.
Explanation and discussion
Question 18· Number bases· JAMB
Express 25 (base 10) in base 2.
Explanation and discussion
Question 19· Number bases· JAMB
Express 45 (base 10) in base 3.
Explanation and discussion
Question 20· Number bases· JAMB
Convert 1011 (base 2) to base 10.
Explanation and discussion

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JAMB Mathematics questions: Number bases

If 35 (base n) = 26 (base 10), find n.

Find the digit y if 2y4₇ = 144 (base ten).

Convert 1101 (base 2) to base 8.

Which of the following numbers is the largest?

Convert 1.11₂ to base ten.

Convert 0.101 (base 2) to base 10.

Convert 52 (base 8) to base 10.

Convert 345 (base 6) to base 10.

Evaluate 101 (base 2) + 111 (base 2), giving the answer in base 2.

Evaluate 341₆ − 125₆, giving the answer in base six.

Which of these numbers is the largest? 1011₂, 23₅, 15₈, 1111₃

Subtract 101 (base 2) from 1100 (base 2), giving the answer in base 2.

Add 234 (base 5) and 143 (base 5), giving the answer in base 5.

Convert 1010 (base 2) to base 5.

Find the digit x if 2x1 (base 3) = 22 (base 10).

Evaluate 12 (base 3) × 2 (base 3), giving the answer in base 3.

Convert 213 (base 4) to base 10.

Express 25 (base 10) in base 2.

Express 45 (base 10) in base 3.

Convert 1011 (base 2) to base 10.