Maths
Ram and syam were playing a game and krithi who is 1 year younger than ram was watching them play. Here is their conversation.Ram: shyam, think of a number in your mind and then double it.(Shyam told the number to krithi and the number was 5)Ram: add 6 to the result and then find the half of the number.Shyam did the calculation and got the result as (5+5+6)/2= 8.Ram : then subtract the number that you thought in the starting from the result, 3 is left behind.Krithi was so surprised by this and asked ram how did he get to know, he told her that he is a magician and started laughing.
This is a required question
1. What would be the result if the number that shyam thought was 4. *
1 point
4
3
2
1
2. What would be the result if the number that shyam thought was 7/4and the number given by ram was 3/2. Does ram’s trick still work? *
1 point
3/4, no
3/4, yes
3/2, no
3/2, yes
3. An algebraic expression representing this situation? *
1 point
(2x +6)/2 – x = 3
(x +6)/2 – x = 3
(2x +6)2 – x = 3
2x +6/2 – x = 3
4. What would be the result if the number that shyam thought was -4. *
1 point
4
3
2
1
Answers
Solution :-
Let us assume that, shyam think of number in mind is x .
so,
→ Double of number = 2x
now,
→ Add 6 to the number and half = (2x + 6)/2
now, subtracting the number , result is 3 .
→ (2x + 6)/2 - x = 3
hence, the required algebraic expression representing this situation is (2x + 6)/2 - x = 3 .
The result if the number that shyam thought was 4 is,
→ (2 * 4 + 6)/2 - 4
→ (8 + 6)/2 - 4
→ (14/2) - 4
→ 7 - 4
→ 3 .
now, the result if the number that shyam thought was 7/4and the number given by ram was 3/2.
→ (2 * 7/4 + 6)/2 - 7/4 = 3/2
→ (7/2 + 6)/2 - 7/4 = 3/2
→ (7 + 12)/2 - 7/4 = 3/2
→ (19/2) - (7/4) = (3/2)
→ (19*2 - 7)/4 = (3/2)
→ (31/4) ≠ (3/2)
therefore, required result is (31/4) and ram's trick doesnt work .
The result if the number that shyam thought was (-4) is,
→ (2 * -4 + 6)/2 - (-4)
→ (-8 + 6)/2 + 4
→ (-2/2) + 4
→ (-1) + 4
→ 3 .
Learn more :-
A hundred people participated in a flash mob. First, they formed a circle. MJ marked as number one had a torch. He point...
https://brainly.in/question/38163805
HELP-ASAP-A single line of four cats one behind the other walks towards and head-on into a single line of five cats walk...
https://brainly.in/question/38409325
Given : a random number doubled and 6 added , then halved then subtract the initial number
Result is 3
To Find : Whats the magic / logic behind this
What would be the result if the number that shyam thought was 4.
What would be the result if the number that shyam thought was 7/4and the number given by ram was 3/2. Does ram’s trick still work
An algebraic expression representing this situation
What would be the result if the number that shyam thought was -4
Solution:
Let say any random number assumed is N
Double of Number = 2N
6 is added Hence 2N + 6
Number of Halved = (2N + 6)/2 = N + 3
N is subtracted hence N + 3 - N = 3
So Result is 3 , Independent of the value of N
(2N + 6)/2 - N = 3
replace N with x
(2x + 6)/2 - x = 3 is the algebraic expression representing this situation
number that shyam thought was 7/4
Still result will be 3 Hence If Ram gives 3/2 trick does not work
Ram give 3/4 , trick does not work
As result must be 4 as its independent of number thought
if Ram give 3 then trick work
Verification
2 * (7/4) = 7/2
7/2 + 6 = 19/2
(19/2) /2 = 19/4
19/4 - 7/4 = 12/4 = 3
if the number that shyam thought was -4 result would be 3 only
as result is independent of number thought
Verification
2 * (-4 )= -8
-8 + 6 = - 2
-2/2 = -1
-1 - (-4) = 3
Learn More:
Sneha did a math magic with her friend Kriti. She asked her to think ...
https://brainly.in/question/39589431
If u solve this U R gr8! Put any mathematical signs 3 3 3=0 3 3 3=1 3 ...
brainly.in/question/16606992