rekha drew a circle of radius 2 cm on a graph paperof grid 1cm by 1 cm. she then calculated the area of the circle by counting only number of full unit squares that fell within the parameter of the circle. if the value that rekha obtained was d sq cm less than the correct value, what was the minimum and maximum possible value of d?
vaibhav wrote a certain number of positive prime numbers on a piece of paper . vikram wrote down the product of all the possible triplets among those numbers - for every pair of nmbers wrote by vikram, vishal wrote down the corresponding GCD. if 90 of the numbers written by vishal were prime, how many numbers did vaibhav write?
sum of the roots....2,-2,4...stupid qstion but..pls explain
Ajay and Bhuvan start simultaneously from M and N towards N and M respectively. After they meet at P, Ajay increases his speed by 50% and returns to M, while Bhuvan decreases his speed by 20% and returns to N. If Ajay takes 60 minutes for the entire journey, what is the time taken by Bhuvan for the entire journey??????
45 minutes
96 minutes
81 minutes
Cannot be determined
The expression f(x) is cubic in x in which the coefficient of x^3 is 1. If f(1) = 5 and f(2) = 8 and f(3) = 11 find f(4)?
Easy !
If one of the root of the equation x^2-10x+16=0 is half of one of the root of the equation x^2-4Rx+16=0 , then :
Find R such that both the equation have integral roots .
puys😁....😠geometry..😉number system... 
mensuration k dhang s tayyari kar lo....8-9 to aane hn......👍
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one year ago the ratio between A's and B's salary was 3:4. the ratio of their individual salaries between last year and present salaries are 4:5 and 2:3 respectively. at present total of their salary is 4160. what is A's present salary.
0 voters
Puys, pls suggest a good source to practice functions and graphs!
50 cows can graze a field in 40 days, 35 cows can graze the same field in 70 days. in how many days can 20 cows graze the field ?
Can somebody explain approach?
A young girl Roopa leaves home with x flowers, goes to the bank of a nearby river. On the bank of the river,there are four places of worship, standing in a row. She dips all the x flowers into the river. The number of flowers doubles. Then she enters the first place of worship, offers y flowers to the deity. She dips the remaining flowers into the river, and again the number of flowers doubles. She goes to the second place of worship, offers y flowers to the deity. She dips the remaining flowers into the river, and again the number of flowers doubles. She goes to the third place of worship, offers y flowers to the deity. She dips the remaining flowers into the river, and again the number of flowers doubles. She goes to the fourth place of worship,offers y flowers to the deity. Now she is left with no flowers in hand.
1. If Roopa leaves home with 30 flowers, the number of flowers she offers to each deity is a. 30 b. 31 c. 32 d. 33
2. The minimum number of flowers that could be offered to each deity is a. 0 b. 15 c. 16 d. Cannot be determined
3. The minimum number of flowers with which Roopa leaves home is a. 16 b. 15 c. 0 d. Cannot be determined
In how many ways can 1000 be written as a sum of 'n' consecutive natural numbers, where 'n' is greater than 1?
0,1,2,3
27 unit cubes are assembled together to form a 3 3 3 cube. How many sets of 3 cubes can you find such that the centres of the 3 cubes lie in a straight line?
a. 32 b. 50 c. 49 d. 44 e. 76
Please find ahead the attached question.
P and Q are two opposite ends of a straight running track. Ria and Tia start running towards each other simultaneously from P and Q respectively. As soon as any of them reaches an end, she turns back and starts running towards the other end. Their first meeting happens at a point 210 m away from P and the second meeting happens at a point 150 m away from Q. If the speeds (in m/s) of Ria and Tia are x and y respectively, such that 2x>y>x, then what is the distance between P and Q?
which book for quadratic equation?
does anyone have e-book of vedic maths for faster calculation?
Asking a silly doubt ....
1. find the number of divisors of 1080 excluding the throughout divisors which are perfect squares.
2. number of divisors of 544 which are greater than 3
please share the approach. @Shubh.i
pfa plz answer
hello all, often v face questions in which we are asked "how many solutions are possible" or "how many such numbers are there" etc. and the options are quite close to each other. in that case is it advisable to leave those questions ?? what should be the startegy to attempt those questions?? please help!!!😠