Question

A spinner is spin 80 times. The outcomes of the spinner are 1,2,3,4.How many times do you expect the number 4

Answer 1

Given:

A spinner is spin 80 times.

Outcomes are 1,2,3,4

To Find:

How many times 4 will come

Solution:

When we spin the spinner the possible outcomes are 1,2,3,4.

Now as we know

Probability of an event

= Number of favourable outcomes/Total number of outcomes

Now,

Probability of getting 4 = 1/4

Probability of getting "4" 80times will be:-

= 1/4 × 80

= 20

Hence, probability of getting "4" 80 times is 20times.

Answer 2

♣ Qᴜᴇꜱᴛɪᴏɴ :

• A spinner is spin 80 times. The outcomes of the spinner are 1,2,3,4.How many times do you expect the number 4 ?

★═════════════════★

♣ ɢɪᴠᴇɴ :

• A spinner is spin 80 times
• The outcomes of the spinner are 1,2,3,4

★═════════════════★

♣ ᴛᴏ ꜰɪɴᴅ :

• ᴘʀᴏʙᴀʙɪʟɪᴛ ʏ ᴏꜰ ɢᴇᴛᴛɪɴɢ "4" ɪɴ 80 ᴛɪᴍᴇꜱ

★═════════════════★

♣ ᴀɴꜱᴡᴇʀ :

$\bigstar$ ᴘʀᴏʙᴀʙɪʟɪᴛ ʏ ᴏꜰ ɢᴇᴛᴛɪɴɢ "4" ɪɴ 80 ᴛɪᴍᴇꜱ ɪꜱ 20 ᴛɪᴍᴇꜱ $\bigstar$

★═════════════════★

♣ ᴄᴀʟᴄᴜʟᴀᴛɪᴏɴꜱ :

• The outcomes of the spinner are 1,2,3,4.

Probability Equation :

$\large\boxed{\sf{P(A)=\dfrac{n(A)}{n}}}$

Where :

• "P(A)" denotes Probability of A

• "n(A)" denotes The number of occurrences of A (The number of favorable outcomes)

• "n" denotes The total number of possible outcomes (The sample space)

According To Question :

• n(A) = 1

• n = 4

$\boxed{\sf{P(A)=\dfrac{1}{4}}}$

Probability of getting 4 = $\sf{\dfrac{1}{4}}$

Probability of getting "4"  80 times will be

= $\sf{\dfrac{1}{4}}$ × 80

$\sf{=\dfrac{80}{4}}$

= 20

$\bigstar$ ᴘʀᴏʙᴀʙɪʟɪᴛ ʏ ᴏꜰ ɢᴇᴛᴛɪɴɢ "4" ɪɴ 80 ᴛɪᴍᴇꜱ ɪꜱ 20 ᴛɪᴍᴇꜱ $\bigstar$