Correct Answer: 385 metres

Solution : We know,
Distance covered = Speed × Time taken
Average speed = 1386 km/hr = $1386×\frac{5}{18}$ = 385 m/s
Time taken = 1 second
$\therefore$ Distance covered in 1 second = 385 × 1 = 385 metres
Hence, the correct answer is 385 metres.

Correct Answer: TSQ

Solution : Let's check the options –
First option: TSQ; T – 1 = S; S – 2 = Q
Second option: JHG; J – 2 = H; H – 1 = G
Third option: PNM; P – 2 = N; N – 1 = M
Fourth

Correct Answer: Thang-Ta

Solution : The correct option is Thang-Ta.

Thang-Ta is an Indian martial art from Manipur. It combines armed and unarmed combat and often involves the use of swords and spears. The other martial arts, such as Muay Thai, Kalaripayattu, and Gatka, are associated with Thailand, Kerala

Correct Answer: –20

Solution : Given: $a+b+c=0$ and $a^2+b^2+c^2=40$
we know that,
$(a+b+c)^2 = a^2 + b^2 + c^2 + 2(ab+bc+ca)$
Putting the values, we get:
⇒ $0 = 40 + 2(ab+bc+ca)$
⇒ $ab+bc+ca = -\frac{40}{2} = -20$
Hence, the correct answer is –20.

Correct Answer: Pauling scale

Solution : The correct option is the Pauling scale.

This scale was developed by Linus Pauling. The Pauling electronegativity scale quantifies the ability of an atom to attract electrons in a chemical bond. It's a dimensionless scale. Fluorine is set to 4.0 as it is

Correct Answer: ZF 50

Solution : Given:
XD 45, YE 53, ?, AG 58, BH 55

Add 8 and subtract 3 alternatively to the numbers given in the series and add 1 to the place value of each letter, to obtain the required missing term –
XD 45→X + 1

Correct Answer: 1

Solution : $\frac{3-\operatorname{\sin}^2 A+\operatorname{\cos}^2 A}{2+2 \operatorname{\cos}^2 A}$
$=\frac{1-\operatorname{\sin}^2 A+2+\operatorname{\cos}^2 A}{2+2 \operatorname{\cos}^2 A}$
$=\frac{\operatorname{\cos}^2 A+2+\operatorname{\cos}^2 A}{2+2 \operatorname{\cos}^2 A}$ [$\because\cos^2 A=1-\sin^2 A$]
$=\frac{2+2\operatorname{\cos}^2 A}{2+2 \operatorname{\cos}^2 A}$
$=1$
Hence, the correct answer is 1.

Correct Answer: 11

Solution : In the below diagram, the shaded part represents the region common to both house and bike only.

Therefore, the number of houses that are only bike→11

So, from the above, the total number of houses that are only bikes is 11. Hence, the third option

Correct Answer: 7

Solution : Given:
The ratio of the present age of father and son = 5:1
The ratio of age of father and son, seven years later = 3:1

Let the present age the father and son be 5x, x.
So, seven years later their ages will be→(5x

Correct Answer: 51

Solution : Given:
3 : 11 :: 7 : ?

Like, 3 : 11→(3²) + 2 = 9 + 2 = 11
Similarly, follow the same pattern for 7 : ?→(7²) + 2 = 49 + 2 = 51

So, 7 is related