Question

100,97,94,91,....the 20ᵗʰ term of this AP is..../ 100,97,94,91,....ಈ ಈ ಸಮಾಂತರ ಶ್ರೇಡಿಯ 20ನೇ ಪದ. *

Answer 1

Answer:

We have the A.P as 100, 97, 94, 91 …

So, a = 100

⇒ d= 97 – 100 = – 3

Now recall that, nth term of an AP is Tn = a + (n – 1)d

⇒ Tn = 100 + (n – 1)(– 3)

= 100 – 3n + 3

⇒ Tn = 103 – 3n

Since we need negative term, Tn < 0

So, 103 – 3n < 0

⇒ 103 < 3n

⇒

< n

⇒ 34.333 < n

⇒ n>34

i.e. N = 35

∴ n=35 for the first negative term in the given A.P.

⇒ T35 = a + (35 – 1)d

= 100 + 34 × – 3

= 100 – 102

= – 2

∴ the first negative term of the given AP is – 2.

Answer 2

Answer:

100.97.94.is answer

Step-by-step explanation:

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