If 137 + 276 = 435 how much is 731 + 672 ?

If 137 + 276 = 435 how much is 731 + 672 ? (A) 534 (B) 1403 (C) 1623 (D) 1531

7 उत्तर

B
- Balchanda
- 04 फरवरी
- 0 टिप्पणी
0
(C) 1623br /br /br /
- Shyam
- 25 सितम्बर
- 0 टिप्पणी
0
1623
- Shivam
- 04 अगस्त
- 1 टिप्पणी
1
Option C is the answer. Since the given sum is added by 20 in the question. In the same way 220 is added to the sum in the next question..
- Seshathri
- 22 अप्रैल
- 0 टिप्पणी
1
not clear
- Nikita
- 05 फरवरी
- 0 टिप्पणी
0
A
- Kallam
- 16 अक्तूबर
- 0 टिप्पणी
8
First look at the ones digit. Something that ends in 7 plus something that ends in 6 usually ends in 3. But in this case the answer ends in 5, so we must not be working in base 10! Instead, 6+7=13 must be 5 plus a multiple of our base. So either it's base 8, base 4, or base 2. But it can't be base 4 or base 2, since some of the digits are bigger than 4. The only possibility left is base 8. br /br /So is it really base 8? Let's check:br /br /6+7 = 13 (base 10) which is 15 (base 8). So write down a 5 and carry the one.br /3+7+1 = 11 (base 10), which is 13 (base 8). Write down a 3 and carry the one.br /1+2+1=4. br /br /So 137 (base 8) + 276 (base 8) = 435 (base 8). So far so good! br /br /Now do the other addition base 8:br /br /1+2=3, so the last digit is 3br /3+7=10 (base 10) = 12 (base 8), so the next digit is 2. Carry the 1. br /7+6+1 = 14 (base 10) = 16 (base 8).
- Prabhash
- 14 जुलाई
- 0 टिप्पणी
-2

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