# Posts by nikhil

Total # Posts: 29

**Math**

Problem: Tad draws three cards at random, without replacement, from a deck of ten cards numbered 1 through 10. What is the probability that no two of the cards drawn have numbers that differ by 1? Express your answer as a common fraction. Scott's solution: =============== ...

**probability**

Thanks a lot Scott, Appreciate your quick response. I reviewed the answer key and it states 7/15 as the answer to this problem. I am wondering if the answer key is incorrect. Thanks again Nikhil

**probability**

Tad draws three cards at random, without replacement, from a deck of ten cards numbered 1 through 10. What is the probability that no two of the cards drawn have numbers that differ by 1? Express your answer as a common fraction.

**Pre-Cal**

A plane has a velocity of 400 mph to the SW. A wind from the west is blowing at 50 mph. Find the resultant speed and direction. How do i find resultant speed without a direction.

**Math**

Find the simple interest on 8,500 rd from 12th October,1999 to 6th march 2,000 at per annum

**wisdom'**

jack ate a mango

**Math**

The sum of real values of k for which the cubic x^3-kx+k-1=0 has exactly tho distinct real solution.

**mathe arithmetic progression**

If the term 7th of an A.P are 18 and 30 respectively.find the 13th term

**Math**

The sum of three consecutive natural number is 153.find the numbers

**Science**

600

**Science**

istance of a planet from sun is four times the distance of the planet frpm earth.How many years will the planet take to complete one revolution of sun?

**Nm juniour clg,rkl**

A 20gm bullet collision is fired horizontaly into a 5kg block of wood.suspended by a long spring.The bullet gets embedded in the block and the block at the hole swing 15cm above in intial level.calculate the velocity of bullet?

**maths**

60

**physics**

four equal charges 2*10^-6c each are fixed at the four corner of a square of side 5cm.find the coulumb force experinced by one of the charge due to rest three

**physics**

Stone dropped from top of a tower 100m high. At same instant another stone is thrown vertically from base of the tower with a velocity of 25m/s. When and where will the two stones meet? Given g =10 m/s^2

**physics**

the ray of son strike the surfaces of a lake at an angle of incidence of 30°.find the angle through which the rays are deviated when they enter water of refrective index 1.33.

**Math**

Liz uses 19 connecting cubes to make a model of house. The house model is in the shape of a rectangle and is one cube high. How many different ways could Liz make the model of the house?

**physics**

a particuler moves along the sides AB,BC,CD of a square of side 25m with a speed of 15m/s. Its average velocity is?

**maths**

In t hours, distance covered by Sita is 5t distance covered by Gita is 4t solve for t: 5t + 4t = 27 9t = 27 t = 3 hours

**physics**

300N

**Physics**

A stone is thrown vertically upward at 15 m/s. Neglect friction due to the air. What is the stone's velocity after 2 seconds?

**integral calculus**

lim x->3(x^3-x-24)/(x^3+x^2-36)

**physics**

Two masses m and 2m are attached with each other by a rope passing over a frictionless and massless pulley. If the pulley is accelerated upwards with an acceleration ‘a’, what is the value of T?

**Business**

1 What are the reasons of declines in employee job satisfaction? 2 What factors differentiate good decision makers from poor ones? 3 When do groups make better decisions than individuals? 4 What are the pros and cons for focusing on the distant future and the heavy ...

**trigonometry**

CosA

**calculus**

1 pt) Find the length of the curve defined by y=1/8(x^2−8ln(x)) from x=3 to x=5

**7th grade science**

make a word out of the letters P A M O U S E E N

**Muscular Energy**

sorry

**maths**

If A=1+r^a+r^2a+r^3a+.......................to infinity B=1+r^b+r^2b+................to infinity then find a/b=????? Is r^2a supposed to be r^(2a) or a*r^2? In other words, is the a part of the exponent? what the heck is that? exponents are like 2 cubed or 2 squared. 2 cubed= ...

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