Mathematics (NTSE Stage2 (NationalLevel) ScholasticAptitude & Language Comprehension): Questions 79  86 of 112
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Question number: 79
» Mathematics » Trigonometry
Question
If then value of x in ∆ABC is
Choices
Choice (4)  Response  

a.  24° 

b.  12° 

c.  30° 

d.  28° 

Question number: 80
» Mathematics » Arithmetic
Question
There are four prime numbers written in ascending order. The product of the first three is 385 and that of the last three is 1001. The last number is
Choices
Choice (4)  Response  

a.  13 

b.  19 

c.  11 

d.  17 

Question number: 81
» Mathematics » Arithmetic
Question
A horse and two cows together cost Rs. 680. If a horse costs Rs. 80 more than a cow, then the cost of horse is
Choices
Choice (4)  Response  

a.  Rs. 350 

b.  Rs. 300 

c.  Rs. 380 

d.  Rs. 370 

Question number: 82
» Mathematics » Trigonometry
Question
cos 4x is equal to
Choices
Choice (4)  Response  

a.  1 + 8sin^{2}xcos^{2}x 

b.  2cos^{2}2x 

c.  1 + 2sin^{2}2x 

d.  1  8sin^{2}xcos^{2}x 

Question number: 83
» Mathematics » Statistics
Question
The mean of 78 numbers is 27. If each observation is divided by 3, the new mean is
Choices
Choice (4)  Response  

a.  9 

b.  27 

c.  18 

d.  None of the above 

Question number: 84
» Mathematics » Percentage
Question
If cost price of 20 articles is equal to selling price of 12 articles, then the profit percentage is
Choices
Choice (4)  Response  

a.  33.3% 

b.  66.7% 

c.  28% 

d.  50% 

Question number: 85
» Mathematics » Trigonometry
Question
In the figure below, PQ = QS, QR = RS and ∠SRQ = 100°. Find the value of ∠QPS.
Choices
Choice (4)  Response  

a.  40° 

b.  15° 

c.  35° 

d.  20° 

Question number: 86
» Mathematics » Statistics
Question
If the mean and median of a set of numbers are 8.9 and 9 respectively, then the mode will be
Choices
Choice (4)  Response  

a.  8.2 

b.  9.2 

c.  10.2 

d.  7.2 
