How many passwords are there formed from either lower case letters or numeric characters of length 4 where the first and last characters must be the same? Select one: a. 102.363 +26².36³ b. 10-362 +26-36² C. 264 +104 O d. 10-(263 +36³) How many students are needed in a room so that at least 11 were born in the same month? Select one: a. 120 O b. 121 O C. 140 O d. 141
How many passwords are there formed from either lower case letters or numeric characters of length 4 where the first and last characters must be the same? Select one: a. 102.363 +26².36³ b. 10-362 +26-36² C. 264 +104 O d. 10-(263 +36³) How many students are needed in a room so that at least 11 were born in the same month? Select one: a. 120 O b. 121 O C. 140 O d. 141
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Algorithms.
answer both please.

Transcribed Image Text:How many passwords are there formed from either lower case
letters
or numeric characters of length 4 where the first and last
characters
must be the same?
Select one:
a. 102.36³ +262.36³
b. 10.362 +26.36²
C. 264 + 104
O d. 10 (26³ +36³)
How many students are needed in a room so that at least 11
were born in the same month?
Select one:
a. 120
O b.
121
O C.
140
O d. 141
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