Explanation

Alexander Graham Bell invented an early version of the metal detector in 1881.

It was initially designed to locate a bullet inside President James Garfield.

Explanation

$$(44x+35y)+(34x-25y)$$

$$=(44x+34x)+(35y-25y)$$

$$=78x+10y$$

Explanation

iPhone: is a specific model of smartphone produced by Apple, making it a recognized brand for smartphones. 

The first-generation iPhone was announced by then–Apple CEO and co-founder Steve Jobs on January 9, 2007, 

Explanation

The Ever Given was a Panama-flagged cargo ship operated by the Evergreen Marine Corporation.

It ran aground in the Suez Canal on March 23, 2021, and blocked one of the world’s busiest trade routes for 6 days.

Explanation

Let number of coins = 3x, 5x, 4x
→ Total value = 264
→ $3x+10x+20x=33x=264\Rightarrow x=8$

$\mathrm{<br>}$2 coins = 5x = 5 × 8 = 40 coins
→ Value = 40 × 2 = 80 

So to get 66, x = 6

33x = 264 → x = 8
33x = 198 → x = 6 → 3x = 18 coins → 1 coins = 18

So likely in your example:

• Ratio = 3:5:4

• Total = 198

• x = 6

• 2 coins = 5x = 30 coins

• Value = ₹60

So if 2 coins value = 66, x = 6.6, which is not clea

Explanation

"Twenty kilometres" is treated as a singular unit of distance.

Therefore, it takes a singular verb — "is" — to match the singular subject meaning.

Explanation

FIA (Federal Investigation Agency) and ANF (Anti-Narcotics Force) are deployed at airports for immigration and anti-drug operations.

Inland Revenue handles taxation and is not involved in airport operations.

Explanation

The first 6 odd numbers are:

$$1,3,5,7,9,11$$

Now calculate their sum:

$$1 + 3 + 5 + 7 + 9 + 11 = 36$$

Now divide by 6 (the number of terms):

$$text{A.M.} = frac{36}{6} = 6$$

Explanation

Airport security scanners help detect weapons, explosives, and contraband.

They are crucial for ensuring passenger and flight safety.

Explanation

EDI (Electronic Data Interchange) attacks can involve various electronic components like batteries, switches, and radiometric devices.

These materials may be used to disrupt or manipulate electronic communication systems.