in cbse sample paper 2019 set 1 maths there is a typing error in question 6
it is written 23 x 5 =105
it should be 23 x 5 = 115
https://www.teachoo.com/8974/2862/Question-6/category/CBSE-Class-10-Sample-Paper-for-2019-Boards/20181103114532.pdf
Model question pepper of chemistry
relation and functions exercise 1.3 last sum answer is option is b
1+tan2x=sec2x why?