Que. 1 Check whether 6n can end with the digit 0 for any natural number n.
Que 2 Explain why 7 × 11 × 13 + 13 and 7 × 6 × 5 × 4 × 3 × 2 × 1 + 5 are composite numbers.
Que 3 . Prove that √5 is irrational.
Que 4 Prove that 3√2+5 is irrational.
Saturday, March 11, 2023
class X chapter 1
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