The number of ways Jose can arrange his family members into a row of 5 seats if Jose must sit in the first seat is 840.
Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. For example, 3 × 4 means 3 is added to itself 4 times, and vice versa for the other number.
The number of ways Jose can make his family sit is,
Number of ways = number of ways people can sit on the first sit × number of ways people can sit on the second sit × number of ways people can sit on the third sit × number of ways people can sit on the fourth sit × number of ways people can sit on the fifth sit
Since Jose wants to sit on the first seat there are only options for the first seat, therefore,
Number of ways = 1 × 7 × 6 × 5 × 4 = 840
Hence, the number of ways Jose can arrange his family members into a row of 5 seats if Jose must sit in the first seat is 840.
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