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konstantin123 [22]
3 years ago
8

Riya got 10 correct answers and ten incorrect answers. what is her score if each correct answer is awarded with 3 marks and each

incorrect answer is awarded with -1?​
Mathematics
1 answer:
Natasha2012 [34]3 years ago
5 0

Answer:

20

Step-by-step explanation:

Riyas score = ( correct answer × mark) + ( incorrect answer × mark lost )

= ( 3× 10) + ( -1 ×10 )

= 30 -10

=20

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Maurinko [17]
24 * 3/4 = 18

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Final answer: B
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3 years ago
Two intelligent, honest students are sitting together at lunch one day when their math teacher hands them each a card. “your car
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1     12
1     15
1     18
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2     9
3     4
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Now, the information says that A doesn't know what B has, so we can immediately cross off all of the combinations that have the integer appearing once and once ONLY off, because if it happened once only, A would know of it straight away. Now, our sample space becomes much smaller.

1     12
1     15
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2     9
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6     3

Using this same logic, we know that we can cross off all of the digits that occur only once in B's column.

2     6
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Now, A definitely knows what number B has because there is only one number left in B. Hence, we can conclude that the loser, B, has the integer 6.
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3 years ago
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Answer:

have:

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Step-by-step explanation:

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