Explanation

LCM of 4 and 10: multiples of 4 = 4, 8, 12, 16, 20... multiples of 10 = 10, 20...

First common multiple = 20 

Last verified on 12-04-2026

Explanation

Group 1 total = 6 × 50,000 = Rs. 300,000  

Group 2 total = 4 × 75,000 = Rs. 300,000  

So, 1st and 2nd groups are same.

Last verified on 11-04-2026

Explanation

• When events have the same probability, they are called equally likely events.
• Each event has an equal chance of occurring.
• No event is more likely than the other.
• Used in probability theory.

Last verified on 11-04-2026

Explanation

• An open sentence contains one or more variables (unknowns).
• Its truth value is not fixed (true or false).
• It becomes true or false only after substituting values.
• Closed sentence has no unknowns.
• Closed sentence always has fixed truth value.

Last verified on 11-04-2026

Explanation

• Simple interest uses I = P × R × T, where interest depends only on the original principal.  
• Compound interest earns interest on interest.

Last verified on 11-04-2026

Explanation

• The total distance around any closed 2D shape is called perimeter.
• It is the boundary length of a shape.
• Used for shapes like square, rectangle, triangle, circle.
• It is measured in units like meters or centimeters.

Last verified on 11-04-2026

Explanation

The center is the midpoint of the diameter.

Midpoint = ((-5 + 3)/2 , (6 + (-4))/2)

= (-2/2 , 2/2)

= (-1 , 1)

Last verified on 11-04-2026

Explanation

Let son's age = x

Then Saeed's age = 2x

x + 2x = 60

3x = 60

x = 20

So Saeed's age = 2 × 20 = 40

Last verified on 11-04-2026

Explanation

If wheat = 100

Then sugar = 100% more = 100 + 100 = 200

So sugar : wheat = 200 : 100 = 2 : 1

Last verified on 11-04-2026

Explanation

Red : Blue = 3 : 2

If 3 parts = 21 red marbles  

Then 1 part = 21 ÷ 3 = 7

So blue = 2 parts = 2 × 7 = 14

Last verified on 11-04-2026