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what is formula for (a-b)^2..
it's answer is a^2+b^2-2ab...
then how can it be a^2+b^2-4ab. . !!
can u plz explain

https://cracku.in/cat/history/1269514. Can u Please elaborate on the solution of the 5th Question.

A pipe can fill a tank in 6 hours,but due to a leakage it took 8 hours to fill the tank .if the tank is full, in what time will the tank become empty due to the leakage?

https://cracku.in/banking/history/1378642?src=test solution having mistake.correct it

A)solving the energy challenge B) requires behavior C) change and new technological D) approaches.E)no error.my answer is b but the correct answre is quoted as E .who is correct?

https://cracku.in/banking/history/1374854?src=test...please check answer of Q5. its 3 or more than 3????

N is a natural number between 10 and 1000. P denotes the product of its digits. S denotes the sun of its digits. If 6P + 4S= 4N, how many values can N take?

A drank 100 ml more than half the milk in a container. Later, B drank 100 ml more than half the remaining milk in the container. C went last and drank 100 ml more than half the remaining milk in the container and it became empty. How much did A drink?

How many 8 letter words can be formed using the letters in the word TRUTHFUL??? My answer is coming as 6720 but the required answer is 10080...help plzz

In Arun's opinion, his weight is greater than 65 kg but less than 72 kg. His brother doest not agree with Arun and he thinks that Arun's weight is greater than 60 kg but less than 70 kg. His mother's view is that his weight cannot be greater than 68 kg. If all are them are correct in their estimation, what is the average of different probable weights of Arun?