Explanation

Number of heads = 48

Number of feet = 140

Calculation:

Let the number of hens is x and the number of cows is y. Therefore,

x + y = 48           ----(1)

According to the question,

2x + 4y = 140

⇒ x + 2y = 70     ----(2)

Subtracting (1) from (2), we get

y = 22

Put this value in equation (1)

⇒ x = 48 - 22 = 26

No.of hens =26
No. of cows =22.

Explanation

Total wheat = 500 Kg 

Each bag =25 kg 

total bags =500/25 = 20 bags

Explanation

Let the capacity of 1 bucket = x

Then the capacity of Tank= 25x

New capacity of bucket= 2/5x

Required number of buckets

= 25x/(2x/5)

= 25x*5/2x

= 125/2

= 62.5

Explanation

• An isosceles triangle is a triangle with two sides of equal length.
• If all three sides are equal, it is called an equilateral triangle.
• A scalene triangle has all sides of different lengths, and a right triangle has one right angle (90 degrees).

Explanation

Total amount =1000

Total parts of amount = 2+3 = 5

One part is + 1000/5 = 200

So Rabil amount part = 2 x 200 = 400

Explanation

The pattern in the series is:

+5 (5 to 10)

+3 (10 to 13)

x2 (13 to 26)

+3 (26 to 29)

x2 (29 to 58)

+3 (58 to 61)

x2 (61 to 122)

Therefore, the correct answer is 122.

Explanation

The correct sequence should be: 5, 16, 6, 16, 7, 16, 8.

The pattern is an increase of 1 in the non-16 numbers. The correct next number after 7 should be 8, not 9.

Therefore, the wrong number in the sequence is: 9

Explanation

The logarithm of any number to itself as base is 1.

This is because log(a)/a = 1, where 'a' is any number.

Explanation

Loss = Cost price of 5 balls

Loss = 720 - (Selling price of 17 balls)

Loss = Cost price of 17 balls - Selling price of 17 balls

Cost price of 17 balls = Selling price of 17 balls + Loss

= 720 + (Cost price of 5 balls)

Cost price of 1 ball = 60

Explanation

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ND27-12-2022