NDA Model Paper Set-6

Test Preparation on NDA Model Paper Set-6

1.

A pair of dice is thrown, then what is the probability of getting a total of 10 or 12?

11/12
23/4
31/9
44/12

There are four favourable cases (6, 4), (4, 6), (5, 5), (6, 6). The required probability = 4/36 = 1/9

2.

What is the probability that a leap year has 53 Sundays?

11/7
22/7
33/7
44/7

A leap has 366 days or 52 weeks and two days. These two are favorable days and the total no. of days is seven. Probability of getting Sunday = 2/7

3.

One card is drawn from a pack of 52. Find the probability of drawing a black ace.

11/13
22/13
33/13
41/26

4.

The probabilities of A, B, and C solving a problem are 13, 27, and 38 respectively. If the problem is attempted by all simultaneously, find the probability of exactly one of them solving it.

125/56
225/65
34/56
41/28

5.

A speaks the truths in 75% and B in 80%cases. In what percentage of cases are theylikely to contradict each other narratingthe same incident ?

115%
230%
335%
438%

6.

If log102 = 0

128
230
331
4301

7.

If 3x = 4y = 12z, then z is equal to

1x + y
2xy
3xy/x+ y
43x + 4y.

8.

The vlaue of cos 10

114 tan 10
218 sec 10
318 cot 10
418 sec 10

9.

The angle of elevation of the tops of two pillars of height

1a2b
2ab2
3ab
4a2b2.

10.

Value of 1 + cos 56

1sin 28
214 cos 28
34 cos 28
4None of these.

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