Explanation

To find the number: 15 ÷ 0.20 = 75

So, 15 is 20% of 75.

Explanation

A number is exactly divisible by 5 if it ends in 0 or 5.

230590 ends in 0, so it is divisible by 5.

Explanation

The subject is the person or thing doing the action — here, Raju is performing the action "went back".

So, Raju is the correct subject of the sentence.

Explanation

Explanation

The symbol ∩ represents the common elements between two or more sets.

For example, if A = {1, 2, 3} and B = {2, 3, 4}, then A ∩ B = {2, 3}.

Explanation

Let's use the Pythagorean theorem to find the distance between the school and the market:

School (north) = 9m

Market (east) = 12m

Distance² = 9² + 12²

= 81 + 144

= 225

Distance = √225

= 15m

Explanation

To convert the decimal number 139 to binary:

139 ÷ 2 = 69 remainder 1

69 ÷ 2 = 34 remainder 1

34 ÷ 2 = 17 remainder 0

17 ÷ 2 = 8 remainder 1

8 ÷ 2 = 4 remainder 0

4 ÷ 2 = 2 remainder 0

2 ÷ 2 = 1 remainder 0

1 ÷ 2 = 0 remainder 1

Reading the remainders from bottom to top:

10001011

Explanation

If, If-Else, and Switch are used to make decisions based on conditions in programming.

These are known as Conditional Statements because they execute code only if certain conditions are met.

Explanation

The Push function is used to insert (add) an element onto the top of a stack.

In stack operations, Push = Insert, while Pop = Remove.

Explanation

The heart is part of the circulatory system, not the digestive system.

The stomach, small intestine, and large intestine are all key parts of the digestive system.