41, 43, 47, 53, 61, 71, 73, 81
Question:
41, 43, 47, 53, 61, 71, 73, 81
[A].
61
71
73
81
41, 43, 47, 53, 61, 71, 73, 81
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
Each of the numbers except 81 is a prime number.
Similar Posts
The diagonal of the floor of a rectangular closet is 7 feet. The shorter side of the closet is 4 feet. What is the area of the closet in square feet?
Question:
The diagonal of the floor of a rectangular closet is 7 feet. The shorter side of the closet is 4 feet. What is the area of the closet in square feet?
[A].5 1 4 [B].
13 1 2 [C].
27 [D].
37 Answer: Option C
Explanation:
Other side = 15 2 – 9 2 2 2 ft = 225 – 81 4 4 ft = 144 4 ft = 6 ft. Area of closet = (6 x 4.5) sq. ft = 27 sq. ft.
What will be remainder when (6767 + 67) is divided by 68 ?
Question:
What will be remainder when (6767 + 67) is divided by 68 ?
[A].1 [B].
63 [C].
66 [D].
67 Answer: Option C
Explanation:
(xn + 1) will be divisible by (x + 1) only when n is odd.
(6767 + 1) will be divisible by (67 + 1)
(6767 + 1) + 66, when divided by 68 will give 66 as remainder.
At 3:40, the hour hand and the minute hand of a clock form an angle of:
Question: At 3:40, the hour hand and the minute hand of a clock form an angle of:
[A].120° [B].
125° [C].
130° [D].
135° Answer: Option C
Explanation:
Angle traced by hour hand in 12 hrs. = 360°.
Angle traced by it in 11 hrs = 360 x 11 ° = 110°. 3 12 3 Angle traced by minute hand in 60 min. = 360°.
Angle traced by it in 40 min. = 360 x 40 ° = 240°. 60 Required angle (240 – 110)° = 130°.
What is the unit digit in the product (365 x 659 x 771)?
Question:
What is the unit digit in the product (365 x 659 x 771)?
[A].1 [B].
2 [C].
4 [D].
6 Answer: Option C
Explanation:
Unit digit in 34 = 1 Unit digit in (34)16 = 1
Unit digit in 365 = Unit digit in [ (34)16 x 3 ] = (1 x 3) = 3
Unit digit in 659 = 6
Unit digit in 74 Unit digit in (74)17 is 1.
Unit digit in 771 = Unit digit in [(74)17 x 73] = (1 x 3) = 3
Required digit = Unit digit in (3 x 6 x 3) = 4.
A man has some hens and cows. If the number of heads be 48 and the number of feet equals 140, then the number of hens will be:
Question:
A man has some hens and cows. If the number of heads be 48 and the number of feet equals 140, then the number of hens will be:
[A].22 [B].
23 [C].
24 [D].
26 Answer: Option D
Explanation:
Let the number of hens be x and the number of cows be y.
Then, x + y = 48 …. (i)
and 2x + 4y = 140 x + 2y = 70 …. (ii)
Solving (i) and (ii) we get: x = 26, y = 22.
The required answer = 26.
A man can row a boat at 20 kmph in still water. If the speed of the stream is 6 kmph, what is the time taken to row a distance of 60 km downstream?
A man can row a boat at 20 kmph in still water. If the speed of the stream is 6 kmph, what is the time taken to row a distance of 60 km downstream?A. 20/6 hours
B. 27/2 hours
C. 30 hours
D. 30/13 hours
Explanation:
Speed downstream = 20 + 6 = 26 kmph.
Time required to cover 60 km downstream = d/s = 60/26 = 30/13 hours.