Explanation

Cognitive development refers to how a person’s thinking and intellectual abilities grow and change over time.

It is closely linked with physical and emotional development, especially during childhood and adolescence.

Explanation

The volume of a parallelepiped is given by:

Volume = length × breadth × height

Substitute the given values:

Volume = 5x × 3x² × 7x⁴

Multiply the terms:

Volume = 105x⁷

Explanation

فعل کسی کام کے کرنے، ہونے یا سہنے کو کہا جاتا ہے۔

یہ جملے میں عمل یا کارروائی کو ظاہر کرتا ہے، جیسے "چلنا"، "کھانا"، "سوچنا" وغیرہ۔

Explanation

A number is divisible by 8 if its last three digits form a number that is exactly divisible by 8.

For example, 4,320 is divisible by 8 because 320 ÷ 8 = 40 (a whole number).

Explanation

طول کا مطلب لمبائی ہے، اور اس کا متضاد "چوڑائی" ہوتا ہے جو ایک شے کی عرض کو ظاہر کرتا ہے۔

درازی اور "طوالت" بھی لمبائی کی وضاحت کرتے ہیں۔

Explanation

The harmonic mean is the reciprocal of the arithmetic mean of the reciprocals of the data points.

It is calculated as the inverse of the average of the inverses of the values.

Explanation

An anagram is formed by rearranging all the letters of a word to create a new word.

"Heart" → "Earth" uses the same letters in a different order, making it a valid anagram.

Explanation

To solve this problem, find the rate at which the men weave cloth:

15 men weave 120 meters in a day

Rate = 120 meters / 15 men = 8 meters per man per day

Now, find the total cloth woven by 35 men:

35 men × 8 meters per man per day = 280 meters

Explanation

The average is calculated by dividing the sum of quantities by the number of quantities. Therefore, the number of quantities can be found by dividing the sum by the average.

Number of quantities = Sum / Average

Number of quantities = 5200 / 650

Number of quantities = 8

Explanation

A number divisible by both 2 and 5 is automatically divisible by their LCM = 10.

For example, 20 ÷ 2 = 10, 20 ÷ 5 = 4, and 20 ÷ 10 = 2.