Question 251:

• JAMB 2017

Evaluate (\(\sin\)45^o + \(\sin\)3^o ) in surd form

A. \(\frac{\sqrt{3}}{2\sqrt{2}}\)
B. √3 − \(\frac{1}{2}\)
C. \(\frac{1}{2}\)√2
D. 1 + \(\frac{\sqrt{2}}{2}\)

Question 252:

• JAMB 2017

If temperature t is directly proportional to heat h, and when t = 20^oC, h = 50 J, find t when h = 60J

A. 24^oC
B. 20^oC
C. 34^oC
D. 30^oC

Question 253:

• JAMB 2017

Simplify 3 \(^{n − 1}\) x \(\frac{27^{n + 1}}{81^n}\)

A. 3\(^{2n}\)
B. 9
C. 3ⁿ
D. 3 \(^{n + 1}\)

Question 254:

• JAMB 2017

Given T = {even numbers from 1 to 12}
N = {common factors of 6, 8 and 12} Find T n N

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

Question 255:

• JAMB 2017

Given the quadrilateral RSTO inscribed in the circle with O as centre. Find the size angle x and given RST = 60^o

A. 100^o
B. 140^o
C. 120^o
D. 10^o