Hence, option D is the correct answer.

 Given equation: 5 × 15 ÷ 7 – 20 + 4 = 77

After checking option A only we find that the two signs under the given option makes the eq. correct as shown below;

Thus, after interchanging the signs :

5 × 15 + 7 – 20 ÷ 4

5 × 15 + 7 – 5

75 + 2

= 77

Hence, option A is the correct answer.

Let’s understand this with the help of a venn diagram

A.T.Q

S+A+G= 100 = students participating in either Golf or Skating or both.

S+A=56= students participating in skating along some participating in golf

G+A=60= students participating in golf along some participating in skating

Now, we have to find the students participating only in skating will be (S+A+G)-(G+A) = 40

Hence, option C is the correct answer.

* Kailash temple or Kailasanath temple was built by the Rashtrakuta Dynasty. The temple project was commissioned by King Krishna I. This temple is the largest of the rock-cut Hindu temples at the Ellora Caves, Maharashtra.

* The Rashtrakuta Dynasty ruled parts of South India from the 8th to the 10th century CE. Dantidurga is considered as the founder of the Rashtrakuta Dynasty.

● Bylakuppe Monastery (Namdroling) is situated in Karnataka.

● The full name of the monastery is Thegchog Namdrol Shedrub Dargyeling.

● It is the second largest Tibetan settlement in the world outside Tibet.

Speed of train = 80 km/h

Let length of the train = Length of the platform = x km

⇒

⇒

⇒

Speed of current = y km/h

Speed of boat during upstream = (x-y) km/h

Speed of boat during downstream = (x+y) km/h

boat covers 64 km upstream in 8 hours

Speed of boat during upstream =

Speed of boat during downstream =

⇒ x – y = 8 ……………(1)

⇒ x +y = 10 ………….(2)

Adding (1) and (2)

⇒ 2x = 18

⇒ x = 9

Speed of the boat in still water = 9 km/h =

The meanings of the other words are:

Anarchist: a person who believes in or tries to bring about anarchy.

Malicious: characterized by malice; intending or intended to do harm.

Ridiculous: deserving or inviting derision or mockery; absurd.