Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Balls are arranged in rows to form an equilateral triangle .The first row consists of one ball, the second two balls and so on. If 669 more balls are added, then all the balls can be arranged in the shape of a square and each of its sides then contains 8 balls less than each side of the triangle. find the initial number of balls.
Ans: Let their be n balls in each side of the triangle
∴ No. of ball (in ?) = 1 + 2+ 3...........=n(n +1)/2
No. of balls in each side square = n-8
No. of balls in square = (n-8)2
APQ n(n +1)/2 + 660 = (n-8)2
On solving
n2 + n + 1320 = 2(n2 - 16n + 64)
n2 - 33n - 1210 = 0
⇒ (n-55) (n+22) = 0 n=-22 (N.P)
n=55
∴No. of balls =n(n +1)/2 = 55x56/2
= 1540
Q. How many permutations can you make of the word STATISTICS? Solution: There are 10 letters in the word STATISTICS, i.e. n=10. Three of them are S's, so n 1 =3, three are T'
#question what is input and output analysis
what are the characteristic of digital ic
The Shape of a Graph, Part II : In previous we saw how we could use the first derivative of a function to obtain some information regarding the graph of a function. In this secti
Determine the linear approximation for f(x)= sin delta at delta =0
sdgshyjyu
how to use big-m method
If the diameter of a circle is tripled times, the circumference is a. multiplied by 3. b. multiplied by 6. c. multiplied by 9. d. multiplied by 12. a. The formula fo
What is Slope of a Line ? A line can have a "steep" slope or a "gradual" slope. slope = rise/run The "rise" is the distance going up or down. The "run" is the distance goin
hi i would like to ask you what is the answer for [-9]=[=5] grade 7
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd