Explanation

Joe Biden becomes oldest person ever to be elected as US President in U.S history.

**

According to Article II of the U.S. Constitution, the president must be a natural-born citizen of the United States, be at least 35 years old, and have been a resident of the United States for 14 years.

**

Explanation

• The arithmetic mean is also known as the average.
• It is calculated by adding up all the marks and dividing by the number of subjects or examinations.
• This is the common method used to calculate a student's average marks.

Explanation

A screw gauge (micrometer) measures very small lengths with high precision, up to 0.01 mm.

It is commonly used to measure wire thickness and small objects accurately.

Explanation

The strength or intensity of a force is measured by its magnitude, which represents its size.

Force is a vector quantity, meaning it has both magnitude and direction.

Explanation

Lemon juice is acidic due to citric acid, giving it a pH between 2 and 3.

Any substance with a pH below 7 is considered acidic.

Explanation

Hamza gives 1/5 of 500 = Rs. 100 to Adil, leaving Rs. 400.

He then gives half of 400 = Rs. 200 to Bilal, so he is left with Rs. 200.

Explanation

The standard width of a volleyball court is 9 meters, with a length of 18 meters.

This measurement is set by the Fédération Internationale de Volleyball (FIVB) for official matches.

Explanation

Minimum Players required for games/sports

Cricket: 11

Football: 11

Hockey: 11

Basketball: 5

Rugby football: 15

Polo: 4

Water polo: 7

Volleyball: 6

Kabaddi: 7

Snooker: 1

Boxing: 2

Gymnastics: 8

Ice Hockey: 6

Explanation

The standard length of a cricket pitch is 22 yards (66 feet or 20.12 meters) between the stumps.

The popping crease, where batsmen stand, is 4 feet (1.22 meters) in front of the stumps.

Explanation

Both students and teachers benefit when they actively engage in discussions and share knowledge.

Mutual learning enhances understanding creativity and problem-solving skills.