DELSU Mathematics 2021/2022 Past Questions

If(x+3) varies directly as y and x = 3 when y= 12 what is the value of x when y=8?

Find the sum of the first twenty linear sequence 5,9,13, 17...

The third term of a geometric progression (G.P) is 63 and the fifth term is 567 find the sum of the first six terms of the progression.

The nth term of the sequence 2, 6, 18, 54, is 4374 Find the number of n

In a class of 50 students, 30 speak Edo while 19 speak Yoruba and 7 students speak both languages. How many students neither of the languages?

The sum of digits of a two digit number is 13 and the units is 3 less than the tens digit. What is the number?

The quadratic equation whose mots are (1 - √{13}) and (1 + √{13})

A hollow sphere has a volume of kcm³ and a surface area of kcm². Calculate the diameter of the sphere

Find the median of the following numbers: 2.64, 2,50, 2.72, 2.91 and 2.35.

A baker used 40% of a 50kg bag of flour. If 1/8 of the amount used was for cake, how many kilogrammes of flour was used for cake?

If X is positive, for what range of X is 4 + 3X< 10?

Find the standard deviation of the numbers 1, 7, 6, 3, 4, 5, 2, 8, 9

Find the arithmetic mean of the following numbers 30, 32, 34, 36, 38, 40, 42

Five years ago, a father was 3 times as old as his son. Now, their combined ages amount to 110 years. What is the current age of the father is?

Find the product of (2√y— 3y) and (3y + 2√y)

Three numbers x, y and z are connected by the relationships y = 4/9x + 1 and z = 4/9y + 1. If x = 99, find z.

If $$(4)^{2x - 2}$$ = 243(2.3)^5, then x has the value

Solve without using tables $$log_{10}150 - log_{10}(\frac12)$$

A rectangular picture 7cm by 9cm is enclosed by a frame 1/2cm wide. Calculate the area of the frame

If sin x equals cosine x, what is x in radians?