The digit in the ones place of a 2 digit number is twice the digit at the tens place. What is the number?

Correct Answer - Base = 14 m , altitude = 28 m

Correct Answer - `"Mean "=(6)/(4), "variance "=(30)/(49)`

Correct Answer - `"Mean "=(3)/(5), "variance "=(68)/(125)`

Correct Answer - अयूब ने ज्यादा दूरी तय की। यह दूरी 0.9 km या 900 m ज्यादा थी।

Correct Answer - `{:((a)0.7,(b)20.9,(c)14.6,(d)102.0,(e)600.8):}`

Correct Answer - 37,29

There are two cases, (i) First digit is greater than 2 (ii First digit is 2 Case : (i) First digit can be chosen from 3,4,5,6 so 4 possibilities, then next 3 digits can be selected from any 6 digits. = 4 × 6 ×...

Correct option is (D) x – 2y – 14 = 0 Let first number is x and second number is y. \(\therefore\) x - 2y = 14     (According to given condition) \(\Rightarrow\) x –...

I thought F or H = 80 is giving by n(F u H) = n(F) + n(H) - n(F n H)