Question

Find the 20th term of the AP, 6, 10, 14,18,--​

Answer 1

Answer:

a = 6 , d = 4

Tn = a + (n-1)d

= 6 + (20 -1 ) 4

= 82

Answer 2

$\sf\small{ \underline{\underline\red{ \pmb{Given:-}}}}$

• AP = 6, 10, 14, 18_________

$\sf\small{ \underline{\underline\red{ \pmb{To \: find:-}}}}$

• The 20th term

$\sf\small{ \underline{\underline\red{ \pmb{Solution:-}}}}$

• a = 6
• d = 10-6=4

$\tt \: T_{20}=a+(20-1)d \\ \\\tt = a + 19d \\ \\\tt = 6 + 19 \times 4 \\ \\\tt = 6 + 76 \\\\ \tt = 82$