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One pipe can fill a cistern in 4 hours while another one can drain

One pipe can fill a cistern

How do I start studying lr di? should I start solving questions from study room?

Hindi aur English dono me question kaise select kre

My accuracy in RC section is low . I get bored while reading and most of the times I cant understand the passage.so how can i work in this ?

if a : b = 2 : 3, d : e = 5 : 4 and a : d = 3 : 4, then find ratio between b and e

In triangle ABC, D and are two points on the sides AB and AC respectively so that DE BC and . The ratio of the area of
ABC to the area of trapezium DECB is:

if 1
secθ−tanθ
−
1
cosθ
= secθ × k, 0° < θ < 90°, then k is equal to :

sir please provide answer of tier 2 paper answers of cgl ..if possible .....

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