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CBSE->Std 8 Questions

Total Questions 1510
Find the least number of 5 digits which is a perfect square.
Find the square root by prime factorization. a)11025 b)8469 c)17956
One angle of a triangle is equal to the sum of other two.If the ratio of other two angles are 7:8.Find the angles of the triangles.
The angles of triangle are 3x,(2x+20) and (5x-40).Find the angles.
Three consecutive integers are such that when they are taken in increasing order and multiplied by 3,4,5 respectively,they add up to 386.Find these numbers.
Femina's mother is 22 years younger than Femina's grand mother and 27 years older than Femina.The sum of their ages are 121 years.Find Their present ages.
The sum of 5 consecutive odd numbers is 135.Find the numbers.
The denominator of a fraction is 7 more than the numerator.If 1 is added to the numerator and 6 is added to the denominator,the value of the fraction will be 1/2.Find the numerator and denominator. Sorry again i sent the question wrong.
Mother's age is 6 times Amal's age and grandmother's age is twice mother's age.After 5 years the sum of their ages will be 120 years.Find their present.
Ameen's age is one fifth of his father's age.after 6 years his age will be one third ofhis father's age.how old are they now.
The length of a rectangle is 7cm more than its breadth,if the perimeter is 62cm.Find the length and breadth.
The ratio of two numbers is 2:3.If both the numbers are increased by 8 their ratio becomes 10:13.Find the number.
The denominator of a fraction is 7 more than the numerator and 6 is added to the denominator,the value of the fraction will be 1/2.Find the numerator and the denominator.
The perimeter of a rectangle is 62cm.The length is 5cm more than the breadth,find the length and the breadth.
7a-6/3=3a+1/2 The backward / between 6 and 3 & 1 and 2 means that it is whole divided by. Sorry I entered the question wrong yesterday.
7a-6/3=3a=1/2
(b-2)*4 = 8
Define muscular force.
Dams also can cause some environmental threats right?
what is diffusion?