Explanation

The mean proportional between two numbers a and b is a number x such that: a : x :: x : b

In this case, we want to find the mean proportional between 64 and 81.

Let's set up the proportion: 64 : x :: x : 81

We can rewrite this as: 64/x = x/81

Cross-multiplying, we get: 64 × 81 = x^2

Simplifying, we get: 5184 = x^2

Taking the square root of both sides, we get:

x = √5184

x = 72

So, the mean proportional between 64 and 81 is 72.

Explanation

The idiom “see eye to eye” means: Agreeing with someone.

It refers to having the same opinion or agreement on a matter.

Explanation

"Noor Fatima falls off the horse."

"Off" is used to indicate a movement away from a surface or position.

Explanation

Bean means بیج

Seed means بیج

Explanation

Spurious means جعلی

Fake/False means جعلی

Explanation

Garbage means کچرا

Litter means گندگی

Explanation

Sway means آگے پیچھے حرکت کرنا یا سوئنگ کرنا

Swing means آگے پیچھے حرکت کرنا یا سوئنگ کرنا

Explanation

Adjoining means آگے یا چھونے والا

Adjacent means آگے یا چھونے والا

Explanation

Explanation

Radio waves were first predicted by James Clerk Maxwell in his theory of electromagnetism (Maxwell's equations) in 1867.

Heinrich Hertz experimentally demonstrated their existence in 1887.