In how many ways can two numbers be selected from first 32 natural numbers such that the first number is less than the
second and their sum is divisible by 4?
(a)256(b)128(c)225(d)120
ans?
How many ways can 7 letters be put in 7 respective envelopes? Is it 7^7 or 7! ?? Kindly explain.
Please give solution
Please help to solve these
There are three places in Mumbai: Andheri, Bandra and Kurla, not on the same straight track. Two local trains A and B start simultaneously from Andheri and Bandra respectively towards Kurla. By the time B reaches Kurla, A is exactly halfway to Kurla. Immediately after B reaches Kurla, it starts travelling towards Andheri and it crosses A at a point 33 km from Andheri. The ratio of the speeds of A and B is 3 : 5. Assume that the track joining Andheri to Kurla, Bandra to Kurla and Bandra to Andheri are all straight tracks.
If initially, instead of moving towards Kurla, A and B start moving towards each other, which of the following cannot be a possible distance (in KM) from Andheri at which they will cross each other? ( Please provide a detailed solution)
- 4
- 9
- 36
- 24
0 voters
A car is travelling along a dual carriageway at constant speed. Every 3 minutes a bus passes going in the opposite direction, while every 6 minutes a bus passes the car travelling in the same direction. Buses leave the depot at regular intervals; they travel along the dual carriageway and back to the depot at a constant speed. At what interval do the buses leave the depot? (Please provide a detailed solution)
- 5 minutes
- 4 minutes
- 4.5 minutes
- 3 minutes
0 voters
guys is there any other test series apart from time cl ims that provides video solutions???
In ques 8 do we reduce the fraction or take them as they are given?
Q9?
Q13
Q 15
4 dice are rolled simultaneously how many different cases where the sum of the outcomes is less than 19.. all the dice are different
What is the answer of third one ?
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How can we get this marked step from the above statement. Please help.
In how many different ways can a cube be painted on all its faces such that three different colours are there on the cube?
Guys please help with q 22
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Guys please help with q27 concept