Question

please give me answer please urgent please please give me answer please please please give me answer please please​

Answer 1

Answer : 82

Step-by-step explanation: 89-

The answer is 89 because  see formula-

 

First , the no. Between 102 & 998 which is divisible by 2 &5 is 110 , 120,130 and so on up to 990. So it forms an AP . a= 110 , d= 10 , l = 990. By using formula- l= a+ (n-1)d

990= 110 + (n-1)10

990-110 = (n-1)10

880/10 = n-1

88 = n-1

89 = n

hope it helped you.

Answer 2

Step-by-step explanation:

the numbers which are divisible by 5 and 2 will also be divisible by 5x2 which is 10

• AP:110,120,130,......990

l=990

an=990

a+(n-1)d = 990

110+(n-1)10=990

n=89

therefore 89 number of terms are their in given AP

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