Mathematics (2018) | Study Mode

Join Discuss Share Question Share to WhatsApp
Question 61
A
1.1 
B
1.0 
C
0.9 
D
0.10 
Explanation.
Share Answer

9 is on one decimal place, the next number to it is 8 which will be rounded up to 1 because it is greater than 5 and then added to 9 to give 10, 10 cannot be written, it will then be rounded up to 1 and added to 0.

So the answer is 1.0


Correct Option:
B
Join Discuss Share Question Share to WhatsApp
Question 62
A
1\(\frac{1}{4}\) 
B
2\(\frac{1}{4}\) 
C
D
10 
Explanation.
Share Answer

Using law of indices

25\(\frac{1}{2}\) 8\(\frac{-2}{3}\)

= 25 x (\(\sqrt[3]{8}\)) -2

= 5 x 2-2

= 5 x \(\frac{1}{2^2}\) =

\(\frac{5}{4}\) = \(\frac{11}{4}\)

Answer is A


Correct Option:
A
Join Discuss Share Question Share to WhatsApp
Question 63
A

026\(^o\)

 
B

045\(^o\)

 
C

210\(^o\)

 
D

240\(^o\)

 
Explanation.
Share Answer

Cos = \(\frac{adj}{hyp}\)

= \(\frac{300}{600}\)

= 0.5

= Cos - 10.5

= 60

RPQ = PQs

So the bearing of P from Q is 180 + 60 = 240\(^o\)

Answer is D


Correct Option:
D
Join Discuss Share Question Share to WhatsApp
Question 64
A
111 
B
121 
C
123 
D
143 
Explanation.
Share Answer

54 \(_{eight}\) and 67\(_{eight}\) = 1438

Starting with normal addition, 4 + 7 gives 11

(it is more than the base, 8) 8 goes in 11 just 1 time, remaining 3, the remainder will be written, and the 1 will be added to the sum of 5 and 6 which gives 12 altogether, 8 goes in 12 one time remaining 4, the remainder 4 was written and then the 1 that was the quotient was then written since nothing to add the 1 to.

So answer is 143 in base eight


Correct Option:
D
Previous Page
Question Map
Quiz link
Share Mathematics (2018) with your friends
Share to WhatsApp Share Quiz CBT mode Study mode copy link