hey!!!!
answer this!!
full explanation required!!
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hope this helps you ☺☺☺
option 4) is correct
option 4) is correct
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locomaniac:
thanks :-)
mark it plzz
ok
sorry for inconvenience but fourth Term is 21
may be my answer is wrong
it's okay sir. your answer has certainly helped me out. thank you
Answered by
6
heya..!!!!
let the three terms be (a - d),a (a + d)
case(1)
a - d + a + a + d = 45
=> 3a = 45
=> a = 45/3
=> a = 15---(1)
case (2)
(a - d)² + a² + (a + d)² = 693
=> a ² + d² - 2ad + a² + a² + d² + 2ad = 693
=> 3a² + 2d² = 693
=> 3(15)² + 2d² = 693
=> 675 + 2d² = 693
=> 2d² = 18
=> d² = 18/2 = 9
=> d = +-3
(15 - 3) = 12
a = 15
(15 + 3) = 18
12 , 15 , 18
next term = (18 + d) = (18 + 3) = 21
hence, option (3) is correct
let the three terms be (a - d),a (a + d)
case(1)
a - d + a + a + d = 45
=> 3a = 45
=> a = 45/3
=> a = 15---(1)
case (2)
(a - d)² + a² + (a + d)² = 693
=> a ² + d² - 2ad + a² + a² + d² + 2ad = 693
=> 3a² + 2d² = 693
=> 3(15)² + 2d² = 693
=> 675 + 2d² = 693
=> 2d² = 18
=> d² = 18/2 = 9
=> d = +-3
(15 - 3) = 12
a = 15
(15 + 3) = 18
12 , 15 , 18
next term = (18 + d) = (18 + 3) = 21
hence, option (3) is correct
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