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poizon [28]
3 years ago
11

How many odd numbers with 4 different digits, can be formed using the digits 1, 2, 3, 4, 5, 6, 7, 8? (No repetition is allowed)

Mathematics
1 answer:
olga55 [171]3 years ago
6 0

Answer:

840 ( D )

Step-by-step explanation:

GIVEN DIGITS : 1,2,3,4,5,6,7,8  

Number of odd numbers = 4

Number of even numbers = 4

therefore the number of odd numbers with 4 different digits can be formed by the same way the number of even numbers ( without repetition )

Hence the number of ways odd numbers with 4 different digits = Total number of ways of forming 4 digit numbers / 2

8*7*6*5 = 1680 / 2 =  840 ways

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If f(x) = -2x^2 + x–5, what is f(3)?
yan [13]

Answer:

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Step-by-step explanation:

Replace X by 3

f(3) = -2(3)^2+ (3)-5 = -20

7 0
3 years ago
A new sidewalk will be 5 feet​ wide, 100 feet​ long, and filled to a depth of 3 inches ​(0.25 ​foot) with concrete. How many cub
GarryVolchara [31]

Answer:

4.63 cubic yard.

Step-by-step explanation:

Given,

The length of sidewalk, l = 100 feet,

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Thus, the volume of the concrete needed for making the sidewalk,

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4 0
2 years ago
Can someone help me please
Oxana [17]
C

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5 0
3 years ago
mrs. roberts makes 'regular' and 'low sugar' jam. she sells both kinds of jam in 340-grams jar.A Jar Of her Low sugar Jam Contai
Vinvika [58]

Answer:

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3 0
3 years ago
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