Explanation

Let's say the number of plants in each row is x.

Since there are as many rows as there are plants in each row, the total number of plants is x * x = x².

Given that the total number of plants is 625:

x² = 625

x = √625

x = 25

Explanation

I take a bath at seven in the morning.

Use "at" for specific times (e.g., at seven).

Use "in the morning" for parts of the day.

Explanation

640 × 1.50 = 960

So, the total cost of 640 photocopies at Rs. 1.50 each is Rs. 960.

Explanation

HTTPS stands for HyperText Transfer Protocol Secure — it encrypts data for secure web browsing.

It uses SSL/TLS protocols to protect information from being intercepted or tampered with.

Explanation

The article "a" before "child" is incorrect here because it's referring to his daughter, a specific person already mentioned.

Correct sentence: My friend has a sweet daughter, but the child often remains sick.

Explanation

Adding the suffix "age" to "wreck" forms "wreckage," meaning the remains of something destroyed.

"Age" is a common suffix used to form nouns indicating a result or outcome.

Explanation

Let's say the two numbers are x and y.

Given:

x + y = 24 ... (1)

x - y = 6 ... (2)

Adding (1) and (2):

2x = 30

x = 15

Substituting x in (1):

15 + y = 24

y = 9

The numbers are 15 and 9.

Explanation

Conduction occurs when heat is transferred through direct contact between particles.

It mostly happens in solids, especially metals, which are good conductors.

Explanation

"To" is a preposition showing direction or movement toward a place.

In the sentence, it links the verb "moved" with the destination "another place."

Explanation

Frequency of sound refers to the number of vibrations per second.

It is measured in Hertz (Hz) — 1 Hz = 1 vibration per second.