Question

Given that the nth term of the sequence is Tn = 5n – 3, find

i. The 3rd term[1]

ii. The difference between the 3rd term and the 5th term of the sequence.

Answer 1

Answer:

1ans is 12

2ans is -10

Step-by-step explanation:

take 1 to 5 numbers

and substitute in the place of n in the equation 5n-3

T1 -2

T2-7

T3-12 (d=5) common difference

T4-17

T5-22

so 1ans is 12

2ans is -10

Answer 2

given

nth term of a sequence = 5n-3

therefore 3rd term

= 5×3 - 3. substituting n= 3

= 15- 3

= 12

This is the simplest solution

again for finding first term

put n=1

then first term ( a) = 5×1 -3= 2