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There are 10 pairs of socks in a cupboard from which 4 individual socks are picked at random, the probability that there is atleast 1 pair is?

What can be the maximum number of acute angles in an octagon in which all the interior angles are less than 180 degrees?plz explain solution.

i want the 25 mock test course nly with the analysis of the test also.. pls guide hw to tk it

how to find cube of a number using formula

Three people Mike, John and Peter can do a work together in 30 days. Mike and John together do twice the work done by Peter alone. Mike and Peter together do thrice the work done by John alone. Find the time taken to complete the project if John alone was working.

how to find HCF of fractions ?

Vinay's hobbies are to swim, to run and to ride a bicycle.
Why is this sentence wrong?

how do i solve para jumbles

Only a single rail track exists between stations A and B on a railway line. One hour after the northbound super fast train N leaves station A for station B, a south-bound passenger train S reaches station A from station B. The speed of the super fast train is twice that of a normal express train E, while the speed of a passenger train S is half that of E. On a particular day, N leaves for B from A, 20 min behind the normal schedule. In order to maintain the schedule, both N and S increased their speeds. If the super fast train doubles its speed, what should be the ratio (approximately) of the speeds of passenger train to that of the super fast train so that the passenger train S reaches exactly at the scheduled time at A on that day? A 1 : 3 B 1 : 4 C 1 : 5 D 1 : 6

Remainder 93! Mod 97 ?