All Questions ⁺⁰237827 Questions

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165

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Counting question

help how do I do this

I run a book club with n people, not including myself. Every day, for 100 days, I invite members in the club to review a book. What is the smallest positive integer n so that I can avoid ever having the exact read more ..

Guest Jan 19, 2023

0

196

1

Counting

help I need to count

In the olympic women's skating competition, the gold medal goes to first place, silver to second, and bronze to third. If there are skaters, including Americans, in how many ways can the medals be awarded read more ..

Guest Jan 19, 2023

0

226

1

Counting

need help plz help

(a) Find the number of ways that Magnus can give out 20 identical stickers to 5 of his friends. (Not everyone has to get a sticker.)
read more ..

Guest Jan 19, 2023

0

197

1

Counting

help having trouble with this

Syd chooses two different primes, both of which are greater than 10 and multiplies them. The resulting product is less than How many different products could Syd have ended up with? read more ..

Guest Jan 19, 2023

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215

1

Digits

What do I do here?

Find the number of six-digit numbers, where the sum of the digits is divisible by 8.

Guest Jan 19, 2023

0

169

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Arrangements

plz help I'm stuck on this

Find the number of ways of arranging the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 in a row so that the product of any two adjacent numbers is even or a mutliple of 3

Guest Jan 19, 2023

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166

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Probability

help with this hard problem

The Boomtown Bears are playing against the Tipton Toros in a baseball tournament. The winner of the tournament is the first team that wins three games. The Bears have a probability of of winning each game. read more ..

Guest Jan 19, 2023

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167

0

coordinates

help I don't understand

A median of a triangle is a line segment joining a vertex of a triangle to the midpoint of the opposite side. The three medians of a triangle are drawn below.
read more ..

Guest Jan 19, 2023

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167

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Inequality

I'm stuck on this hard inequality

(a) Show that if a, b, c, d, e, f are nonnegative real numbers, then (a^2 + b^2)^2 (c^4 + d^4)(e^4 + f^4) >= 32abcdef.
(b) Show that if a, b, c, d, e, f are nonnegative real read more ..

Guest Jan 19, 2023

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177

0

Counting

Can anyone help with this?

Find the number of ways of choosing three points from the grid below, so that they form an isosceles right triangle.

Guest Jan 19, 2023

0

174

0

Algebra question

Plz help quickly!

Let S be the set of all real numbers of the form
a1/3 + a2/3^2 + a3/3^3 + ....
where a_i \in {0, 1, 2} for all i. read more ..

Guest Jan 19, 2023

0

247

1

Counting

Is there a formula for this?

Find the number of solutions to
x_1 + x_2 + x_3 + x_4 + x_5 + x_6 + x_7 + x_8 + x_9 + x_10 <= 2 read more ..

Guest Jan 19, 2023

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160

0

Geometry

How to find the area of triangle?

In triangle PQR, M is the midpoint of PQ. Let X be the point on QR such that PX bisects angle QPR, and let the perpendicular bisector of PQ intersect AX at Y. If PQ = 36, PR read more ..

Guest Jan 19, 2023

0

234

1

answer:1.4268292682926829 to the power of 1/20

1.4268292682926829 to the power of 1/20

Guest Jan 19, 2023

0

178

0

Probability

Please help with hard probability

In the SuperLottery, three balls are drawn (at random, without replacement) from white balls numbered from 1 to 12, and one SuperBall is drawn (at random) from red balls numbered from 13 to 20. When read more ..

Guest Jan 19, 2023

0

219

3

help please

How many ways are there to put 5 balls in 3 boxes if the balls are distinguishable but the boxes are not?

Guest Jan 19, 2023

0

159

0

Probability

I can get part (a), but not part (b).

A bag contains five white balls and three black balls. Your goal is to draw two white balls.
read more ..

Guest Jan 19, 2023

0

169

1

Math Question

Please help me with this!

The marks family has two orchards. The orchard by the river is 6 acres in size. The orchard on the hill is 9 acres in size . If 2/3 of the river orchard has apple trees &1/3 of the hill orchard has apple read more ..

Guest Jan 19, 2023

Jan 18, 2023

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182

0

Algebra

What is the best way to solve this?

Arrange the following numbers in increasing order (smallest first, biggest last):
read more ..

Guest Jan 18, 2023

+1

211

0

+19

Select all that apply

Which equation is equivalent to 60% of 25?

-0.6 • 25 = x
-x • 1.6 = 25 read more ..

LIzzie6348 Jan 18, 2023

0

190

1

Geometry

Please help with this!

Triangle ABC is a right triangle with angle BAC= 90 degrees and angle B > angle . Suppose AP is an altitude of the triangle, AQ is an angle bisector of the triangle, and AR is a median of the read more ..

Guest Jan 18, 2023

0

166

0

Math Help

How do you figure out, this, 8x-4=6(x-1)

Guest Jan 18, 2023

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