Question

1 से 70 तक कि कितने % संख्या के वर्ग के अंत मे 1 आता है?
A.20 B.18 C.14 D.21 explain kre.​

Answer 1

Answer:

c.14

Step-by-step explanation:

only the squares of nos. ending with 1 and 9 have 1 at units place.

till 70, there are 14 such nos, hence ur ans is 14

Answer 2

Answer:

1 will come when number ends with 1 or 9

so there are total 14 numbers which are ending with 1 and 9.

e,g 1,9,11,19,21,29,31,39,41,49,51,59,61,69

total no = 70

so the percentage = (14/70)*100 = 20 %

Step-by-step explanation: