Home
Class 10
MATHS
Which term of the AP: 21,18,15,…….. Is -...

Which term of the AP: 21,18,15,…….. Is `-81`?

Text Solution

Verified by Experts

The correct Answer is:
n=8
Promotional Banner

Topper's Solved these Questions

  • PROGRESSIONS

    NCERT BANGLISH|Exercise TRY THIS|2 Videos

  • PROGRESSIONS

    NCERT BANGLISH|Exercise DO THIS|12 Videos

  • PROBABILITY

    NCERT BANGLISH|Exercise THINK AND DISCUSS|3 Videos

  • QUADRATIC EQUATIONS

    NCERT BANGLISH|Exercise OPTIONAL EXERCISE|7 Videos

Similar Questions

Explore conceptually related problems

Which term of the AP: 3,8,13,18,……. Is 78?

Which term of the AP: 121, 117,113, ….., is its first negative term?

Which term of the AP: 121, 117, 113,……… is the first negative term? [Hint:Find n for a_(n) lt 0 ]

Which term of the AP: 3, 8, 13, 18, …, is 78?

Which term of the A.P. {7, 11, 15, 19,….} is 111 ?

Which term of the AP 3,10, 17,... will be 84 more than its 13th term?

30th term of the AP: 10, 7, 4, …, is

Which term of the G.P. 2,1, 1/2,1/4, i s1/(128)?

How many terms of the A.P. : 24, 21, 18, ……… must be taken so that their sum is 78?

11th term of the AP: -3, −12 , -21, …, is