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Similarly a number of the form 10x + y is divisible by 7 if and only if x + 5y is divisible by 7. [8] So add five times the last digit to the number formed by the remaining digits, and continue to do this until a number is obtained for which it is known whether it is divisible by 7. [9] Another method is multiplication by 3.
Serial sevens (or, more generally, the descending subtraction task; DST), where a patient counts down from one hundred by sevens, is a clinical test used to test cognition; for example, to help assess mental status after possible head injury, in suspected cases of dementia or to show sleep inertia.
224: it is divisible by 2 and by 7. Add the last two digits to twice the rest. The answer must be divisible by 7. 364: (3 × 2) + 64 = 70." Well, I think there is a mistake. Obviously 371 is not divisible by 14 but (3×2)+71=77. Where it is written "The answer must be divisible by 7" it should be written "The answer must be divisible by 14".
Last year, district records show that 37% of students across Palm Beach County used the alternative test scores, often referred to as "concordant scores," to get their diplomas. But for some ...
That is, if the last digit is 1, 3, 5, 7, or 9, then it is odd; otherwise it is even—as the last digit of any even number is 0, 2, 4, 6, or 8. The same idea will work using any even base. In particular, a number expressed in the binary numeral system is odd if its last digit is 1; and it is even if its last digit is 0.
Confusing. Trivial. Useless. Laughable. Inconsistent. The road rage over DMV test questions continues for drivers 70 and older.
7 = 111 2, 13 = 111 3, 31 = 11111 2 = 111 5, 43 = 111 6, 73 = 111 8, 127 = 1111111 2, 157 = 111 12, ... (sequence A085104 in the OEIS ) While the sum of the reciprocals of the prime numbers is a divergent series, the sum of the reciprocals of the Brazilian prime numbers is a convergent series whose value, called the "Brazilian primes constant ...
There are a number of programs out there that, under the right conditions, will provide seniors with a free tablet. The Affordable Connectivity Program (ACP), for example, is overseen by the FCC.