A bank has an alarm system in which, once activated, a buzzer sounds every 5 seconds and a light flashes every 4 seconds. How many seconds long are the intervals between simultaneous buzzer sounds and light flashes? (A) 4 (B) 5 (C) 10 (D) 12 (E) 20

Q: A toothed wheel of diameter 50 cm is attached to a smaller wheel of diameter 30 cm. How many…

A:

Q: Why is the answer for ii) not (3/9)*(4/9)?

A: We need to answer, why in part(ii) , P(BG) is not equal to (3/9)(4/9).

Q: What is 7/3 + 19/8

A: 73+198=5624+5724=56+5724=11324

Q: 2/10n+12+3r

A: Given 2(10n+12+3r)=2(10n)+2(12)+2(3r)

Q: Find the tens' digit in the following product:4 x 5 x 6 x 7 x 8 x 9 x 10 x 11 x 12 x 13 x14 (A)0 (B)…

A: Explanation of the answer is as follows

Q: Age: 21, 20 , 18, 30 Teenage (10-20) so what is the Freq(TeenAge) ?

A: Given Data: Age: 21, 20 , 18, 30 we have to calculate frequency : for Teenage (10-20)

Q: Simplify each expression: b) 5(- 4) e) 7a(0) · 3· (- 5) c) (- 7)(-6) a) 5 + (-4) d) [5 + (-4)] + 8

A: Expressions

Q: 2+5+8+11+...293

A:

Q: When Athena was 8 years old, she was twice as old as Mario. At present, Athena is 16 years old. What…

A: Find the present age of the Mario

Q: Prove : (A-B)n C =(A n C) -B

A:

Q: What is 11/4 + 11/8 =

A:

Q: simplify: (n!)/(n+2)!

A: n! = n(n-1)(n-2)...... 4.3.2.1

Q: How was the S1 found on answer A?

A:

Q: Last year Ozzie Albies had 18 hits in April, 25 in May, 35 in June, 25 in July, 31 in August, 28 in…

A: Hits in April = 18 Hits in may = 25 Hits in june = 35 Hits in july= 25 Hits in august = 31 Hits in…

Q: 3(2 )-4(2) 2* -2" Simplify:

A: Given,            32x+1-42x-12x+1-2x

Q: évaluate the following: r (5) " G) (5) r (

A:

Q: Which expression is equivalent to (m 16/8)1/4?

A: We use (am)n = amn

Q: 2/5 1/4

A:

Q: EVALUATE THE FF: C(5,5) C(9,8) P(10,2) / C(10,2) P(100,1) - C(100,1)

A:

Q: Sam uses a calculator to multiply 666, 666x7,777,777. The calculator's answer is displayed as…

A:

Q: simplify-(n+5!) (n+3)(n+a)!

A:

Q: In baseball a pitcher's earned run average, or ERA, 9R where R is the number of runs allowed and I…

A: Given: The earned run average is given by, ER,I=9RI

Q: (B) (C) 1 A person 2 meters tall waiks directly away from a streetlight that is 8 meters above ihe…

A:

Q: (d) 2.46 (е) —0.10

A: Answer- Given null and alternative hypothesis                H0 : μ = 5                H1 : μ > 5…

Q: R(60)

A: Given ,  No. S R 1 20 1600 2 25 800 3 30 250 4 35 300 5 40 800 6 45 1400 Where, S…

Q: 2 (63 = -8) +2= 12

A: Given:        263x-8+2 = 12

Q: 969 m 58° 19 A. B

A: Given:

Q: Evaluate:

A: Evaluate                                             -4200231031021303 Let us evaluate the…

Q: What is 7/9 * 3/5

A:

Q: et xp (81 – e2×)3/2

A:

Q: The name of the property that is illustrated by 3(6 ∙ 5) = (3 ∙ 6)5 is

A:

Q: P(a)=7/10 p(b)=3/5 p(a and b)=? P(a)=13/20 p(a and b)=13/50 p(b)

A: P(a).P(b)=p(a and b)

Q: (07.04 LC) Mellie is conducting a test on mold spores on bread. She uses 6 slices of bread to…

A: The random variable is Bread. There are two dependent samples which are Number of Spots for Strain 1…

Q: (358)16= . Select one: a. (850)10 b. (856)10 c. (658)10

A: In the question it is asked to convert 358 hexadecimal to decimal equivalent.

Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.