Question

The first two ters of an ap are -5 and 6. Its 21st term will

Answer 1

Answer:

Step-by-step explanation:

a= 5

d= t2-t1

 = 6-(-5)

 = 11

t21 = a+(21-1)d

     = -5 +20(11)

     = 220- 5

     = 215

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Answer 2

Answer:

a = - 5

d = 6 - ( - 5 ) = 11

a21 = -5 + 20 × 11

= -5 + 220

The answer is 215

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