a number is as much greater than 21 as it is less than 71 find the number

 कोई संख्या 21 से उतनी ही बड़ी है जितनी वह 71 से छोटी है संख्या ज्ञात कीजिए

Soln:- let the number be x. 

According to Question,  the number be x more than 21 and x less than 71.

⇒x+21=71-x

⇒2x=71-21

⇒2x=50

⇒x=50/2

⇒x=25