DELSU Mathematics 2020/2021 Past Questions

Practice each question, then open it to see the full details.

Without using tables, calculate the value of 1 + cosec30°

A.1/2
B.5
C.1 1⁄4
D.3

What is the probability that a number chosen at random from the integers between 1 and 10 inclusive is either a prime or a multiple of 3?

A.12/100
B.4/10
C.3/10
D.7/10

If 3^2y - 6(3^y) = 27, Find y

A.2
B.9
C.-3
D.3

Find correct to two decimal places $$100 + \frac1{100} + \frac3{1000} + {27}{10000}$$

A.100.22
B.100.30
C.100.02
D.100.51

Find x if x²-2x-15 =0.

A.3,-5
B.-3, 5
C.1, 15
D.-2. -15

A father leaves a legacy of X45 million. t-or his children -Peter, David, and Paul to be shared in the ratio 7:5:3. What amount in million Naira would each receive respectively?

A.N14,N7,N3
B.N15,N5,N3
C.N21,N15,N9
D.N20,N16,N10

The integral values of y which satisfy the inequality 1 ≤ 5 - 2y ≤ 7 are

A.-1,0,1,2
B.0,1,2,3
C.-1,0,1,2,3
D.-1,0,2,3

lf x² - 5x + 6 = (x-a)² + b the value of b is

A.-1/4
B.5/2
C.2
D.3

Given that log₉² = 0.693 and log₉³ = 1.097, find log₉13.5

A.1.404
B.1.790
C.2.598
D.2.790