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Calculate the interest earned if Rs. 15,000 is lent at 6% simple interest per annum and the total amount after 3 years is Rs. 17,700.

The value of $\frac{0.2 \times 0.2 \times 0.3 \times 0.4 \times 0.5}{0.2 \times 0.4}$ is :

Simplify :

$\frac{81^2 \times 10^2}{9}$

Pampa is facing South. He turns 225° clockwise, then turns 90° anticlockwise, then again he turns 225° anticlockwise. Which direction is he facing now ?

Which of the following numbers is not a prime number ?

Two operations are defined for any numbers p and q :

i. p $ q = p + q + 8pq

ii.  p % q = p - q - 13q 

Find the value of  (37 $ 41) % 29.

Kiara walks 25 meters towards the North from her starting point. She then turns right and walks 30 meters, followed by a left turn and walks another 10 meters. Finally, she turns to her left again and walks 30 meters towards the West. How far is Kiara from her starting point now ?

A solid cylinder with a radius of 7 cm and height of 24 cm is melted and recast into cones, each with a radius of 7 cm and height of 8 cm. How many cones can be made ?

A factory produces 10110 light bulbs every month. If 20% of the bulbs are defective, how many bulbs are defective ?

A train running at 72 km/h takes 120 seconds to pass a platform of 200 m long. Find the length of the train.