How Many Lies Has Pinocchio Told Today?

Algebra Level 1

Every time Pinocchio tells a lie, his nose grows one inch longer.

When he left this morning, Pinocchio's nose was only 3 inches long. However, when he arrived home for dinner, his creator Geppetto noticed that his nose was now 9 inches long.

How many lies did Pinocchio tell while he was away?

3 9 5 6

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Arron Kau by Arron Kau

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13 solutions

Igor Morgado
Nov 3, 2015

how can this be calculus?

81 Helpful 5 Interesting 8 Brilliant 4 Confused

It is calculus! In a mathematical notation, the statement is:

dLongitude of nose/dLies =1

Juan Eduardo Ynsil Alfaro - 3 years, 4 months ago

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I was sure this was a trick question based on the wording. If his nose GETS 1 inch longer, than certainly 6 is the answer. But it says his nose GROWS 1 in longer with each lie... this can ALSO be calculated as meaning that the GROWTH increases rather than the nose itself. So, 3+0 is the state of the nose at breakfast, 3 + (0+1) happens at the first lie (=4), 4 + (1+1) happens at the next lie (=6), and then 6 + (1+1+1) happens at the 3rd and final lie (=9). Seems like at least an alternately correct answer.

Darth Vader - 6 months ago

Yeah, same question! The warm-up questions are so difficult compared to these!

Raivat Shah - 3 years, 2 months ago

If "GROWS" is the active word (rather than GETS), then 3 should be the answer. 3 + (0+1) is the first lie's growth. 4 + (1+1) is the second lie's growth. And 6 + (2+1) is the 3rd and final lie's growth. Alternate correct answer based on the wording, me thinks.

Darth Vader - 6 months ago

It's categorized as Algebra.

Logan Gaastra - 5 years, 6 months ago

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That's silly. It popped up as level 3 algebra, too.

Sytse Durkstra - 3 years, 8 months ago
Lakshmi Tumati
Jan 7, 2014

When Pinocchio left for school his nose was only 3 inches long, but when he came back it was 9 inches long. To figure out how many lies he told, we compute 9 − 3 9 - 3 to get 6. So Pinocchio told 6 lies.

21 Helpful 1 Interesting 4 Brilliant 4 Confused

this cant be right it said how many lies did he tell today not after he left

Juliana Lampkin - 5 years, 7 months ago

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Exactly, It needs to specify more.

Robert Robuck - 5 years, 6 months ago

What if he lied three times in breakfast? It is still today.

Jeferson Braun - 5 years, 6 months ago

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They said when he left home Pinocchio's nose was 3 inches and when he came back it's 9 .That means he told 6 lies

genis dude - 4 years, 7 months ago

The initial length of his nose was 3 3 inches. The final length was 9 9 inches. Therefore his nose grew 9 − 3 = 6 9-3=6 inches. Since 1 1 lie is equivalent to 1 1 inch, that means that he lied 6 6 times.

10 Helpful 1 Interesting 1 Brilliant 1 Confused
Devjeet Baghel
Feb 10, 2014

Every time Pinocchio tells a lie, his nose grows one inch longer.

1 lie = 1 inch

When he left this morning, his nose was 3 inches long.

When he arrived home for dinner, his nose was 9 inches long.

Therefore, Pinocchio told 9 − 3 = 6 9 - 3 = 6 lies.

4 Helpful 0 Interesting 0 Brilliant 0 Confused

What if he lied three times in breakfast? It is still today.

Jeferson Braun - 5 years, 6 months ago
Mohammad Khaza
Sep 5, 2017

1 lie=1 inch longer.

so,6 lies= 6 inch longer.

3 Helpful 0 Interesting 0 Brilliant 0 Confused
Gia Hoàng Phạm
Sep 22, 2018

Pinocchio lies from day to night=Pinocchio nose length at day-Pinocchio nose length at night= 9 − 3 = 6 9-3=\boxed{\large{6}}

1 Helpful 0 Interesting 1 Brilliant 0 Confused
Darwin Fabon
Feb 23, 2017

i think more than i should

1 Helpful 1 Interesting 1 Brilliant 1 Confused
Ian Turnbull
Nov 25, 2015

This is basic arithmetic, and the question should be "How many lies did he tell whilst he was out?"

As we don't know if his three inch nose is the result of any lies he told earlier in the day.

2 Helpful 0 Interesting 0 Brilliant 1 Confused
Raymond Fang
Jan 25, 2021

9 − 3 = 6 9-3=6 so easy

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Long Plays
Jul 30, 2018

Assuming that he didn't tell any truths, take 9 − 3 = 6 9 - 3 = 6 inches. One lie is equivalent to one inch extension. Therefore he told 6 lies.

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Harrison Froats
May 30, 2017

Since we know his nose grows an inch for every lie, and he left home with a 3 inch long nose and returned with a 9 inch long nose, we subtract 3 from 9 and get 6, which is how many lies he told.

0 Helpful 0 Interesting 0 Brilliant 0 Confused

1 lie = 1 inch

His nose grew by 9 - 3 = 6 inches

Therefore: he lied 6 times.

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Irina Stanciu
Jan 6, 2017

9-3=6 => 1*6=6 => 6 lies

0 Helpful 0 Interesting 0 Brilliant 1 Confused

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