Advertisements
Advertisements
प्रश्न
In which of the following situations, do the lists of numbers involved form an AP? Give reasons for your answers.
The fee charged every month by a school from Classes I to XII, when the monthly fee for Class I is Rs 250, and it increases by Rs 50 for the next higher class.
उत्तर
The fee charged month by a school from I to XII is
250, (250 + 50), (250 + 2 × 50), (250 + 3 × 50),...
i.e., 250, 300, 350, 400,...
Which form an AP, with common difference (d) = 300 – 250 = 50
APPEARS IN
संबंधित प्रश्न
For an A.P. t3 = 8 and t4 =12, find the common difference d.
Find the 60th term of the A.P. 8, 10, 12, ……., if it has a total of 60 terms and hence find the sum of its last 10 terms.
For the following A.Ps, write the first term and the common difference.
0.6, 1.7, 2.8, 3.9
For the following arithmetic progressions write the first term a and the common difference d:
−1.1, −3.1, −5.1, −7.1, ...
Show that the sequence defined by an = 3n2 − 5 is not an A.P
If seven times the 7th term of an A.P. is equal to eleven times the 11th term, then what will be its 18th term?
Find x, y and z, given that the numbers x, 10, y, 24, z are in A.P.
Choose the correct alternative answer for the following sub question
Find d of an A.P. whose first two terms are – 3 and 4
If the terms 10, a, 40 are in A.P., then find the value of a.
How many terms are present in the sequence of A.P. 6, 11, 16, 21, ......... whose sum is 969?
