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How to use letters on the keypad. I need to put my ID in witch has both numbers and letter. So if my ID is 345CZY56 it would look like this. 345222999999956 -
![Premium Vector | Phone keypad. keyboard template in touchscreen device. user keypad with numbers and letters for phone. interface keypad for smartphone. Premium Vector | Phone keypad. keyboard template in touchscreen device. user keypad with numbers and letters for phone. interface keypad for smartphone.](https://img.freepik.com/premium-vector/phone-keypad-keyboard-template-touchscreen-device-user-keypad-with-numbers-letters-phone-interface-keypad-smartphone_435184-283.jpg)
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Keypad Numbers Letters Phone Ios User Interface Keypad Smartphone Keyboard Stock Vector by ©Kasheev 242655990
![For the numbers 2 through 9 on a telephone keypad (see figure), create two relations: one mapping numbers onto letters, and the other mapping letters onto numbers. Are both relations? functions? Explain. For the numbers 2 through 9 on a telephone keypad (see figure), create two relations: one mapping numbers onto letters, and the other mapping letters onto numbers. Are both relations? functions? Explain.](https://homework.study.com/cimages/multimages/16/20220613_115149-redex2848725783641306812.png)
For the numbers 2 through 9 on a telephone keypad (see figure), create two relations: one mapping numbers onto letters, and the other mapping letters onto numbers. Are both relations? functions? Explain.
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