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Find 20th term from the last …

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Find 20th term from the last term of the AP 3,8,13 ,253

Posted by Geetanjali Thakur 6 years, 11 months ago

CBSE > Class 10 > Mathematics

5 answers

Anu Kumari 6 years, 11 months ago

158

Anand Yadav 6 years, 11 months ago

a=3 ,d=(8-3)=5 ,l=253 Tn = l -(n-1)d T20= 253 -(20-1)5 =253-19*5 =253-95 = 158

Adhya Singh 6 years, 11 months ago

a=253,d=5 but for the last term d=-5 a+(n-1)d. =253+(20-1)(-5). =253+(19)(-5) 253-95 =158

Adhya Singh 6 years, 11 months ago

158

Vishu Mattikatti 6 years, 11 months ago

Ap=3,8,13...............253 a=3 d=8-3=5 a20=a+19d a20=3+19×5 a20=3+95 a20=98 _______________

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Posted by Hari Anand 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

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