Answer Posted / anonymus

digit sum(a*b)= digit sum(digit sum(a)*digit sun(b))
(since digit sum(a * AB...Z)= digit sum(digit sum(a*A)+digit sum(a*B)+...digit sum(a*Z))
=It is easy to verify that digit sum(a*b)=digit sum(digit sum(a)+digit sum(b))(Assume a,b here as single digit number.)
=so applying this result recoursively we get, digit sum(a*b*c)=digit sum(digit sum(a)+digit sum(b)+digit sum(c)).
There fore, digit sum(p)=digit sum(digit sum(13258)+digit sum(15784)+digit sum(32547)+digit sum(36587)+digit sum(4304)))
=digit sum(digit sum(19)+digit sum(25)+digit sum(21)+digit sum(30)+digit sum(12))
=digit sum(2+7+3+3+3)
=digit sum(18)
=9
So,digit sum(p)=9.
Hence Result...

if z is the arithemtic mean between x and y , then the value of x/(x-z)+y/(y-z) is

1105

---

In certain company 20% of the men and 40% of the women attended the annual company picnic. If 35% of all the employees are men .what % of all the employee went to the picnic?

883

---

3x+4y=10 x cube+y cube=6 minimum value of 3x+11y=?

949

---

In 1700 ad, this person showed that a series of 0s and 1s could be used to denote a number:

1160

---

if card punch operator can process 80 cards in half an hour how many cards can this process in 7hr 30min?

959

---

the cordinates of A,b,c are respectively (2,3) ,(4,4) AND (0,-2). If abcd is a parallelgram. The coordinates of D are

957

---

State and prove sufficient condition for differentiability of the function f(x,y).

989

---

State and prove the sufficient condition for the minimum value of the function f (x,y)

1063

---

find 5.72% of 418=

1052

---

Explain the theory of Multiple intelligence with reference to learning of Mathematics.

1016

---

Write the simplified mathematical Maclaurin's expansion for f(x,y).

993

---

a spere circumscribes a cylinder . then the ratio of the surface area of the spere to the curved surface area of the cylinder is

1127

---

Write the condition for critical point (a,b) to become a function f(x,y) maximum.

1263

---

What are the multivariate techniques?

2646

---

The surface of a sphere subtends a solid angle of what amount at its center.

933

---