Prime Numbers - Magic Trick!! - Part 1 | Fun Math | Don't Memorise

Important Time Saving Short Trick / Shortcut For JEE Main 2019 Maths | Part 2

Important Time Saving Short Trick / Shortcut For JEE Main 2019 Maths | Part - 4

Read each sentence to find out whether there is any grammatical error in it or a wrong word has been used. The error, if any, will be in one part of the sentence which has been printed in bold and has been numbered (a), (b), (c) or (d). The number of that part is the answer. If there is no error, the answer is (e) i.e. 'No error'. (Ignore the errors of punctuation, if any.) It so happens (a)/ that this happy campy ritual is their way of life (b)/ and one into which (c)/ they don't particularly welcome (d)/ voyeuristic inrusions. No error (e)

Which of the following statements are true ? (i) 1 is the smallest prime number . (ii) If a number is prime . It must be odd . (iii) The sum to two prime numbers is always a prime number . (iv) none of these.

Let P be the set of prime numbers and let S={t|2^(t)-1 is a prime }. Prove that S sub P.

"I don't recognise none of the politicians who have been invited to be the speakers today." Identify which part of the sentence has an error and select the appropriate option: a) the speakers today b) invited to be c) the politicians who have been d) I don't recognise none of

Aryan told Sriram, “Don't worry I can be able to climb that tree to reach the fruit." Identify which part of the sentence has an error and select the appropriate option: a) I can be able to b) climb that tree c) to reach the fruit d) Don't worry