Home
Class 10
MATHS
If xx means + , -: menas -, - means xx...

If ` xx` means + , `-:` menas -, - means ` xx ` and + means `-:`, then `8 xx 7 - 8 + 40 -: 2 = ?`

A

1

B

`7 (2)/(5)`

C

`8 (3)/(5)`

D

44

Text Solution

AI Generated Solution

The correct Answer is:
To solve the expression `8 xx 7 - 8 + 40 -: 2`, we first need to interpret the symbols according to the given definitions: - `xx` means `+` - `-:` means `-` - `-` means `xx` (which is `+`) - `+` means `-:` (which is `-`) Now, let's rewrite the expression using these definitions: 1. **Rewrite the expression**: - `8 xx 7` becomes `8 + 7` - `- 8` becomes `+ 8` - `+ 40` becomes `- 40` - `-: 2` becomes `- 2` So, the expression `8 xx 7 - 8 + 40 -: 2` becomes: \[ 8 + 7 + 8 - 40 - 2 \] 2. **Perform the operations step by step**: - First, calculate `8 + 7`: \[ 8 + 7 = 15 \] - Now, add `8` to `15`: \[ 15 + 8 = 23 \] - Next, subtract `40` from `23`: \[ 23 - 40 = -17 \] - Finally, subtract `2` from `-17`: \[ -17 - 2 = -19 \] Thus, the final answer is: \[ -19 \]
To solve the expression `8 xx 7 - 8 + 40 -: 2`, we first need to interpret the symbols according to the given definitions: - `xx` means `+` - `-:` means `-` - `-` means `xx` (which is `+`) - `+` means `-:` (which is `-`) Now, let's rewrite the expression using these definitions: ...
Promotional Banner

Topper's Solved these Questions

  • MATHEMATICAL OPERATIONS

    MCGROW HILL PUBLICATION|Exercise EXERCISE 2 (TYPE II)|10 Videos

  • MATHEMATICAL OPERATIONS

    MCGROW HILL PUBLICATION|Exercise EXERCISE 3 (TYPE III)|10 Videos

  • MATHEMATICAL OPERATIONS

    MCGROW HILL PUBLICATION|Exercise EXERCISE 4 (TYPE IV)|20 Videos

  • LOGICAL VENN DIAGRAMS TEST

    MCGROW HILL PUBLICATION|Exercise Exercise 1|30 Videos

  • MIRROR-IMAGES

    MCGROW HILL PUBLICATION|Exercise EXERCISE 1 (TYPE I)|10 Videos

Similar Questions

Explore conceptually related problems

If xx means +, + means div, - means xx and div means - , then 8xx 7 - 8 + 40 div 2 = ?

If + means -: , xx means - , -: means xx and - means + , then 8+ 6 xx 4 -: 3 -4 = ?

If xx means -: , - means xx , -: means + and + means -, then (3 - 15 -: 19) xx 8 + 6 = ?

If + means - , - means xx, xx means -: and -: means + , then 15 xx 3 -: 15 + 5 - 2 = ?

If xx means - , + means -: , - means xx and -: means + , then 15 - 2-: 900 + 90 xx 100 = ?

If - means xx , xx means + , + means -: and -: means -, then 40 xx 12 + 3 - 6 -: 60 ?

If + means -: , -means xx , -: means + and xx means -, then the value of 36 xx 12 + 4 -: 6 + 2 - 3 when simplified is

If + means -:,-: means -,- means xx,xx means +, then 12-8xx6-4-:6+3=?

If + means div , div means -, - means xx , xx means +, then 10 + 5 div 7-4 xx 30 =?