Question 5216:

• JAMB 2023

Find the value of y if \(402_y = 102_{ten}\)

A. 4
B. 2
C. 5
D. 3

Question 5217:

• JAMB 2023

Find the value of y, if log (y + 8) + log (y - 8) = 2log 3 + 2log 5

A. Y = ±5
B. Y = ±10
C. Y = ±17
D. Y = ±13

Question 5218:

• JAMB 2023

In a group of 500 people, 350 people can speak English, and 400 people can speak French. Find how many people can speak both languages.

A. 750
B. 850
C. 250
D. 150

Question 5219:

• JAMB 2023

Factorize: \(16x^4 - y^4\)

A. \((2x - y)(2x + y)(4x^2 + y^2)\)
B. \((2x + y)(2x + y)(4x^2 + y^2)\)
C. \((2x - y)(2x - y)(4x^2 + y^2)\)
D. \((2x - y)(2x + y)(4x^2 - y^2)\)

Question 5220:

• JAMB 2023

If A = { 1, 2, 3, 4, 5, 6}, B = { 2, 4, 6, 8 }. Find (A – B) ⋃ (B – A).

A. {1, 3, 5, 8}
B. {8}
C. {1, 2, 3, 4, 5, 6, 8}
D. {1, 3, 5}