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If the 9th term of an A.P. is zero then show that the 29th term is twice the 19th term?
Concept: undefined >> undefined
Kargil’s temperature was recorded in a week from Monday to Saturday. All readings were in A.P. The sum of temperatures of Monday and Saturday was 5°C more than sum of temperatures of Tuesday and Saturday. If temperature of Wednesday was –30° celsius then find the temperature on the other five days.
Concept: undefined >> undefined
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The sequence −10, −6, −2, 2, ... is ______.
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First four terms of an A.P. are ....., whose first term is –2 and common difference is –2.
Concept: undefined >> undefined
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What is the sum of the first 30 natural numbers ?
Concept: undefined >> undefined
For an given A.P., t7 = 4, d = −4, then a = ______.
Concept: undefined >> undefined
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For an given A.P. a = 3.5, d = 0, n = 101, then tn = ....
Concept: undefined >> undefined
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In an A.P. first two terms are –3, 4 then 21st term is ...
Concept: undefined >> undefined
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If for any A.P. d = 5 then t18 – t13 = ....
Concept: undefined >> undefined
The Sum of first five multiples of 3 is ______.
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15, 10, 5,... In this A.P sum of first 10 terms is...
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In an A.P. 1st term is 1 and the last term is 20. The sum of all terms is = 399 then n = ....
Concept: undefined >> undefined
In an A.P. the 10th term is 46 sum of the 5th and 7th term is 52. Find the A.P.
Concept: undefined >> undefined
The A.P. in which 4th term is –15 and 9th term is –30. Find the sum of the first 10 numbers.
Concept: undefined >> undefined
Two A.P.’s are given 9, 7, 5, ... and 24, 21, 18, ... If nth term of both the progressions are equal then find the value of n and nth term.
Concept: undefined >> undefined
In an A.P. the first term is – 5 and the last term is 45. If the sum of all numbers in the A.P. is 120, then how many terms are there? What is the common difference?
Concept: undefined >> undefined
Sum of 1 to n natural numbers is 36, then find the value of n.
Concept: undefined >> undefined
Divide 207 in three parts, such that all parts are in A.P. and product of two smaller parts will be 4623.
Concept: undefined >> undefined
There are 37 terms in an A.P., the sum of three terms placed exactly at the middle is 225 and the sum of last three terms is 429. Write the A.P.
Concept: undefined >> undefined
If first term of an A.P. is a, second term is b and last term is c, then show that sum of all terms is \[\frac{\left( a + c \right) \left( b + c - 2a \right)}{2\left( b - a \right)}\].
Concept: undefined >> undefined
