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Find the range of given data: 46, 35, 78, 90, 20, 56, 45, 76.
Concept: undefined >> undefined
The monthly pocket money of ten friends is given below:
₹ 80, ₹ 65, ₹ 35, ₹ 65, ₹ 50, ₹ 30, ₹ 60, ₹ 35, ₹ 65, ₹ 30
What is the lowest pocket money?
Concept: undefined >> undefined
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The monthly pocket money of ten friends is given below :
₹ 80, ₹ 65, ₹ 35, ₹ 65, ₹ 50, ₹ 30, ₹ 60, ₹ 35, ₹ 65, ₹ 30
What is the highest pocket money?
Concept: undefined >> undefined
Find the term t15 of an A.P. : 4, 9, 14, …………..
Concept: undefined >> undefined
If the 9th term of an A.P. is zero, then prove that 29th term is double of 19th term.
Concept: undefined >> undefined
Decide whether the following sequence is an A.P., if so find the 20th term of the progression:
–12, –5, 2, 9, 16, 23, 30, ..............
Concept: undefined >> undefined
Given Arithmetic Progression 12, 16, 20, 24, . . . Find the 24th term of this progression.
Concept: undefined >> undefined
Find the 19th term of the following A.P.:
7, 13, 19, 25, ...
Concept: undefined >> undefined
Find the 27th term of the following A.P.
9, 4, –1, –6, –11,...
Concept: undefined >> undefined
Six year before, the age of mother was equal to the square of her son's age. Three year hence, her age will be thrice the age of her son then. Find the present ages of the mother and son.
Concept: undefined >> undefined
Select the correct alternative and write it.
What is the sum of first n natural numbers ?
Concept: undefined >> undefined
Select the correct alternative and write it.
If a share is at premium, then -
Concept: undefined >> undefined
For a given A.P. a = 3.5, d = 0, then tn = _______.
Concept: undefined >> undefined
Find the 23rd term of the following A.P.: 9, 4,-1,-6,-11.
Concept: undefined >> undefined
Choose the correct alternative answer for the following sub-question
If the third term and fifth term of an A.P. are 13 and 25 respectively, find its 7th term
Concept: undefined >> undefined
Find tn if a = 20 आणि d = 3
Concept: undefined >> undefined
Find t5 if a = 3 आणि d = −3
Concept: undefined >> undefined
Decide whether the given sequence 24, 17, 10, 3, ...... is an A.P.? If yes find its common term (tn)
Concept: undefined >> undefined
How many two-digit numbers are divisible by 5?
Activity :- Two-digit numbers divisible by 5 are, 10, 15, 20, ......, 95.
Here, d = 5, therefore this sequence is an A.P.
Here, a = 10, d = 5, tn = 95, n = ?
tn = a + (n − 1) `square`
`square` = 10 + (n – 1) × 5
`square` = (n – 1) × 5
`square` = (n – 1)
Therefore n = `square`
There are `square` two-digit numbers divisible by 5
Concept: undefined >> undefined
Decide whether 301 is term of given sequence 5, 11, 17, 23, .....
Activity :- Here, d = `square`, therefore this sequence is an A.P.
a = 5, d = `square`
Let nth term of this A.P. be 301
tn = a + (n – 1) `square`
301 = 5 + (n – 1) × `square`
301 = 6n – 1
n = `302/6` = `square`
But n is not positive integer.
Therefore, 301 is `square` the term of sequence 5, 11, 17, 23, ......
Concept: undefined >> undefined
