WAEC Past Questions and Answers - Page 1144

5,716.

A fixed asset was bought for N60,000 on 1st January, 1997. Depreciation was provided at 10% on cost. It was bought for N16,000 on 30th June, 2001.The profit or loss on sale was

A.

₦17,000 profit

B.

₦17,000 loss

C.

₦16,000 profit

D.

₦16,000 loss

Correct answer is B

No explanation has been provided for this answer.

5,717.

If \(\overrightarrow{OA} = 3i + 4j\) and \(\overrightarrow{OB} = 5i - 6j \) where O is the origin and M is the midpoint of AB, find OM

A.

-2i - 10j

B.

-2i + 2j

C.

4i - j

D.

4i + j

Correct answer is C

\(\overrightarrow{OA} = (3, 4)\)

\(\overrightarrow{OB} = (5, -6)\)

\(\overrightarrow{OM} = (\frac{3 + 5}{2}, \frac{4 + (-6)}{2})\)

= \((4, -1) = 4i - j\)

5,718.

Find the least value of n for which \(^{3n}C_{2} > 0, n \in R\)

A.

\(\frac{1}{3}\)

B.

\(\frac{1}{6}\)

C.

\(\frac{2}{3}\)

D.

1

Correct answer is C

\(^{3n}C_{2} > 0 \implies \frac{3n!}{(3n - 2)! 2!} > 0\)

\(\frac{3n(3n - 1)(3n - 2)!}{(3n - 2)! 2} > 0\)

\(\frac{3n(3n - 1)}{2} > 0\)

\(3n(3n - 1) > 0 \implies n > 0; n > \frac{1}{3}\)

The least number in the option that satisfies \(n > 0; n > \frac{1}{3} = \frac{2}{3}\)

5,719.

In which ledger is the account of yao, a debtor found?

A.

Nominal ledger

B.

Purchases ledger

C.

General ledger

D.

Sales ledger

Correct answer is D

No explanation has been provided for this answer.

5,720.

P, Q, R, S are points in a plane such that PQ = 8i - 5j, QR = 5i + 7j, RS = 7i + 3j  and PS = xi + yj. Find (x, y).

A.

(-6, -15)

B.

(-6, 5)

C.

(20, 5)

D.

(20, 15)

Correct answer is C

No explanation has been provided for this answer.